Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-21 Thread David Booth
On Sat, 2011-06-18 at 23:05 -0500, Pat Hayes wrote:
 Really (sorry to keep raining on the parade, but) it is not as simple
 as this. Look, it is indeed easy to not bother distinguishing male
 from female dogs. One simply talks of dogs without mentioning gender,
 and there is a lot that can be said about dogs without getting into
 that second topic. But confusing web pages, or documents more
 generally, with the things the documents are about, now that does
 matter a lot more, simply because it is virtually impossible to say
 *anything* about documents-or-things without immediately being clear
 which of them - documents or things - one is talking about. And there
 is a good reason why this particular confusion is so destructive.
 Unlike the dogs-vs-bitches case, the difference between the document
 and its topic, the thing, is that one is ABOUT the other. This is not
 simply a matter of ignoring some potentially relevant information (the
 gender of the dog) because one is temporarily not concerned with it:
 it is two different ways of using the very names that are the fabric
 of the descriptive representations themselves. It confuses language
 with language use, confuses language with meta-language. It is like
 saying giraffe has seven letters rather than giraffe has seven
 letters. 

I don't think that analogy holds.  I don't think this is any sort of
meta-language confusion.  I agree that (for many applications) documents
are more semantically distant from dogs than female dogs are from male
dogs, but I see that as merely a difference of degree -- and one that is
application dependent -- and not of kind.  Semantically, they are all
just relations, and some of these relations are important to some
applications, and others to others:

  :x ex:isPrimarySubjectOf :d .
  :y ex:isSecondarySubjectOf :d .
  :m ex:isOppositeSexOf :f .

To my mind, those all look pretty similar in nature.  

 Maybe this does not break Web architecture, but it certainly breaks
 **semantic** architecture. 

I don't think that's true.  But I think my comments will get a bit
deeper into semantic web architectural issues than will interest most
LOD readers, so I've moved my explanation to the AWWSW list instead:
http://lists.w3.org/Archives/Public/public-awwsw/2011Jun/0006.html 

[ . . . ]

 So far, http-range-14 is the only viable suggestion I have seen for
 how to do this. If anyone has a better one, let us discuss it. But
 just blandly assuming that it will all come out in the wash is a bad
 idea. It won't. 

I agree with both of these sentiments though.


-- 
David Booth, Ph.D.
http://dbooth.org/

Opinions expressed herein are those of the author and do not necessarily
reflect those of his employer.




Re: WebID and pets -- was: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-20 Thread Henry Story

On 20 Jun 2011, at 02:48, Melvin Carvalho wrote:

 On 19 June 2011 20:42, Henry Story henry.st...@bblfish.net wrote:
 
 On 19 Jun 2011, at 20:15, Danny Ayers wrote:
 
 Only personal Henry, but have you tried the Myers-Briggs thing - I
 think you used to be classic INTP/INTF - but once you got WebID in
 your sails it's very different. These things don't really allow for
 change.
 
 Is there a page where I can find this out in one click? Looks like those 
 pages ask all kinds of questions that require detailed and complicated 
 answers. I am surprised anyone ever answers those things. It's certainly 
 more complex than the Object/Document distinction ;-)
 
 Myers Briggs is based on the Jungian analysis of mythology and
 personality types, with a few additions.  Myths being public dreams,
 and dreams being private myths.

I think Jung based a lot of his thinking on the iChing which he mentions a lot
and for the most famous german translation of which he even wrote an 
introduction.
As it happens the iChing does require of you just one click. It asks the 
universe
to answer what change you are undergoing.

   http://wengu.tartarie.com/wg/wengu.php?no=0l=Yijing

So as opposed to personality analysis which is fixed apparently, this is easy
to use - though quite complex and open to interpretation.

 
 The personality types are the lens from which we interpret the inner
 and outer universal symbols.  e.g. Intuitively / Analytically / Senses
 / Feeling.  But the symbols themselves are often the more fascinating
 parts.

yes, the inner/outer distinction also comes from the iChing. The upper trigram 
represents the outer, the lower trigram represents the inner. Btw, these 
trigrams even appear in the UTF-8 symbols.

 
 An interesting parallel here is the relation to Jung's archetypes of
 the unconscious and WebID.  Both in your dreams, and in mythology, you
 have symbols where are metaphors that reference some universal
 concept.  WebID is of course a reference to the self ( foaf : Person
 ).

Perhaps to the self that is only as much as the strength of his links to 
others.  

 
 As many of the myths we live with today are 100s of years out of date,
 and people are searching for something new, perhaps WebID can become a
 modern symbol, to determine or even evangelize the new personality
 type of society, post information revolution :)

I see it more as a tool that by tying in people into the network will grow the
network of semantic web supporters and evangelisers.

Perhaps it can become mythical. The URL should be by now :-)


Henry

 
 
 Only slightly off-topic, very relevant here, need to pin down WebID in
 a sense my dogs can understand.
 
 Ok. So you need to give each of your dogs and cats a webid enabled RDFID 
 chip that can publish webids to other animals with similarly equipped chips 
 when they sniff them. From the frequence and length of sniffs  you can work 
 out the quality of the relationships. On coming home for food, this data 
 could be uploaded automatically to your web server to their foaf file. These 
 relationships could then be used to allow their pals access to parts of your 
 house. For example good friends of your dog, could get a free meal once a 
 week. You could also use that to tie up friendship with their owners, by the 
 master-of-pet relationships, and give them special ability to tag their pet 
 photos. Masters of my dogs friends could be potential friends. If you get 
 these pieces working right you could set up a business with a strong viral 
 potential, perhaps the strongest on the net.
 
 Here to make my point:
 
 
 
 
 The Myers-Briggs thing is intuitively rubbish. But with only one or
 two posts in the ground, it does seem you can extrapolate.
 
 On 19 June 2011 19:52, Henry Story henry.st...@bblfish.net wrote:
 
 On 19 Jun 2011, at 19:44, Danny Ayers wrote:
 
 
 I am of the view that this has been discussed to death, and that any 
 mailing list that discusses this is short of real things to do.
 
 I confess to talking bollocks when I should be coding.
 
 yeah, me too. Though now you folks managed to get me interested in this 
 problem! (sigh)
 
 Henry
 
 Social Web Architect
 http://bblfish.net/
 
 
 
 
 
 --
 http://danny.ayers.name
 
 Social Web Architect
 http://bblfish.net/
 
 
 

Social Web Architect
http://bblfish.net/




Re: WebID and pets -- was: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-20 Thread Kingsley Idehen

On 6/20/11 8:31 AM, Henry Story wrote:

Perhaps it can become mythical. The URL should be by now:-)


The URI :-)



--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: WebID and pets -- was: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-20 Thread Kingsley Idehen

On 6/20/11 10:39 AM, Henry Story wrote:

On 20 Jun 2011, at 10:51, Kingsley Idehen wrote:


On 6/20/11 8:31 AM, Henry Story wrote:

Perhaps it can become mythical. The URL should be by now:-)

The URI :-)

Perhaps we should write it

   URi

to get a bit of Apple magic. Pronounced your-eye,


Neat and implicit !


it does indeed have this you--i tension, which French philosopher of technology Bernard 
Stiegler, elaborating on work by Gilbert Simondon from the 1960ies (especially his book 
L'Individuation psychique et collective to appear in translation this summer in 
English I am told) takes as fundamental to our understanding of the self. There is no 
individual first and social after or on the side, or vice versa. Individuation is a process of 
integration of the social via history passed down through oral traditions initially (by 
memorisation of poems such as the Iliad), through alphabetic writing - the most important 
technological transformation brought on by the ancient greeks; ancient greece where kids had to 
go to school to learn to read and write, so they could learn the laws of the city written on 
the walls of Athens for all to see - and then in the 20th century through radio, and 
television. This learning one's societies past and learning who one is, is the same process 
that then allows one to distinguish oneself from the social and within it. Individuation cannot 
happen without the social background, just as the social can flourish only to the extent that 
it gives the individual a place to distinguish himself within it. Societies themselves are 
individualised by how they distinguish themselves from others...


Yep!

So your WebID indeed identifies you, but within the space of your social and 
conceptual relations.


Amen!

WebID is a very powerful demonstration of what makes Linked Data so 
powerful. It solves real problems that can't be fixed objectively 
(distributed fashion without central control) in the Information Space 
dimension.


Kingsley

Henry




--

Regards,

Kingsley Idehen 
President   CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen







Social Web Architect
http://bblfish.net/





--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen









Re: WebID and pets -- was: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-20 Thread Kingsley Idehen

On 6/20/11 1:48 AM, Melvin Carvalho wrote:

Myers Briggs is based on the Jungian analysis of mythology and
personality types, with a few additions.  Myths being public dreams,
and dreams being private myths.

The personality types are the lens from which we interpret the inner
and outer universal symbols.  e.g. Intuitively / Analytically / Senses
/ Feeling.  But the symbols themselves are often the more fascinating
parts.

An interesting parallel here is the relation to Jung's archetypes of
the unconscious and WebID.  Both in your dreams, and in mythology, you
have symbols where are metaphors that reference some universal
concept.  WebID is of course a reference to the self ( foaf : Person
).

As many of the myths we live with today are 100s of years out of date,
and people are searching for something new, perhaps WebID can become a
modern symbol, to determine or even evangelize the new personality
type of society, post information revolution:)


Nicely stated!

I knew it would only take a little Star Wars mythology, dimensionality,  
and WebID to smoke you out :-)


--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: WebID and pets -- was: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-20 Thread Danny Ayers
On 20 June 2011 10:51, Kingsley Idehen kide...@openlinksw.com wrote:
 On 6/20/11 8:31 AM, Henry Story wrote:

 Perhaps it can become mythical. The URL should be by now:-)

 The URI :-)

The mythical URI, perfect.

-- 
http://danny.ayers.name



Re: WebID and pets -- was: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-20 Thread Danny Ayers
On 19 June 2011 20:42, Henry Story henry.st...@bblfish.net wrote:

 Ok. So you need to give each of your dogs and cats a webid enabled RDFID chip

To inject a little reality: Sashapooch has got an embedded RFID (not
yet RDFID!) tag, not sure but I think it became Italian law.
Basilhound being a bit older, before this stuff came in, has a
(sloppy) tattoo on his tummy, something like LOLU51. I assume the chip
in Sasha has a similar string in it.

But the idea is great - in the same way QR codes are most useful when
they include a URL, putting one in the RFID tag of animals makes a lot
of sense. Simple use case: when the critter wanders off, you can
easily contact the owner.

I know the RFID chips are now really cheap commodities, what I don't
know about is the scanners - are they yet affordable enough that you
could say include one in a mobile phone?

Cheers,
Danny.


-- 
http://danny.ayers.name



Re: Fwd: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-20 Thread Danny Ayers
Point taken, I forget where I am sometimes, will try harder. My apologies.

On 19 June 2011 21:06, Nathan nat...@webr3.org wrote:
 Danny Ayers wrote:

 I feel very guilty being in threads like this. Shit fuck smarter people
 than
 me.

 Just minor, and I can hardly talk as I swear most often in different
 settings, but I am a little surprised to see this language around here. I
 quite like having an arena where these words don't arise in the general
 conversation.

 Ack you know what I'm saying - nothing personal, but I'd personally
 appreciate not seeing them too frequently around here :)

 Best!




-- 
http://danny.ayers.name



Re: WebID and pets -- was: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-20 Thread Yrjana Rankka

On 6/20/11 14:01 , Danny Ayers wrote:

On 19 June 2011 20:42, Henry Storyhenry.st...@bblfish.net  wrote:


Ok. So you need to give each of your dogs and cats a webid enabled RDFID chip

To inject a little reality: Sashapooch has got an embedded RFID (not
yet RDFID!) tag, not sure but I think it became Italian law.
Basilhound being a bit older, before this stuff came in, has a
(sloppy) tattoo on his tummy, something like LOLU51. I assume the chip
in Sasha has a similar string in it.

But the idea is great - in the same way QR codes are most useful when
they include a URL, putting one in the RFID tag of animals makes a lot
of sense. Simple use case: when the critter wanders off, you can
easily contact the owner.

I know the RFID chips are now really cheap commodities, what I don't
know about is the scanners - are they yet affordable enough that you
could say include one in a mobile phone?

Danny,

At least one of my phones (the Nexus S) has one, though not very useful 
yet; It does react to Dutch public transport chip cards and my Finnish 
passport with Unknown tag type.


Yrjänä


Cheers,
Danny.





--
Mr. Yrjana Rankka| gh...@openlinksw.com
Developer, Virtuoso Team | http://www.openlinksw.com
 | Making Technology Work For You




Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Danny Ayers
Point taken Pat but I have been in the same ring as you for many
years, but to progress the Web  can't we just take our hands off
the wheel, let it go where it wants. (Not that I have any influence,
and realistically you neither Pat). I'm now just back from a
sabbatical, but right now would probably be a good time to take one.
If these big companies do engage on the microdata front, it's great.
I'm sure it's been said before, why don't we get pornographers working
hard on their metadata on visuals, because they work for Google/Bing
whatever. The motivation right now might not be towards Tim's day one
goals of sharing some stuff between departments at CERN, but that's
irrelevant in the longer term. Getting the the Web as an
infrastructure for data seems like a significant step in human
evolution. And it's a no-brainer. But getting from where we are to
there is tricky. Honestly, I don't care. It'll happen, my remaining
lifespan or about 50 on top, there will be another, big, revolution.

Society is already so different, just with little mobile phones.

/gak I'm no going to speculate, we're heading for a major change.

Cheers,
Danny.

On 19 June 2011 06:05, Pat Hayes pha...@ihmc.us wrote:
 Really (sorry to keep raining on the parade, but) it is not as simple as 
 this. Look, it is indeed easy to not bother distinguishing male from female 
 dogs. One simply talks of dogs without mentioning gender, and there is a lot 
 that can be said about dogs without getting into that second topic. But 
 confusing web pages, or documents more generally, with the things the 
 documents are about, now that does matter a lot more, simply because it is 
 virtually impossible to say *anything* about documents-or-things without 
 immediately being clear which of them - documents or things - one is talking 
 about. And there is a good reason why this particular confusion is so 
 destructive. Unlike the dogs-vs-bitches case, the difference between the 
 document and its topic, the thing, is that one is ABOUT the other. This is 
 not simply a matter of ignoring some potentially relevant information (the 
 gender of the dog) because one is temporarily not concerned with it: it is 
 two different ways of using the very names that are the fabric of the 
 descriptive representations themselves. It confuses language with language 
 use, confuses language with meta-language. It is like saying giraffe has 
 seven letters rather than giraffe has seven letters. Maybe this does not 
 break Web architecture, but it certainly breaks **semantic** architecture. It 
 completely destroys any semantic coherence we might, in some perhaps 
 impossibly optimistic vision of the future, manage to create within the 
 semantic web. So yes indeed, the Web will go on happily confusing things with 
 documents, partly because the Web really has no actual contact with things at 
 all: it is entirely constructed from documents (in a wide sense). But the 
 SEMANTIC Web will wither and die, or perhaps be still-born, if it cannot find 
 some way to keep use and mention separate and coherent. So far, http-range-14 
 is the only viable suggestion I have seen for how to do this. If anyone has a 
 better one, let us discuss it. But just blandly assuming that it will all 
 come out in the wash is a bad idea. It won't.

 Pat

 On Jun 18, 2011, at 1:51 PM, Danny Ayers wrote:

 On 17 June 2011 02:46, David Booth da...@dbooth.org wrote:

 I agree with TimBL that it is *good* to distinguish between web pages
 and dogs -- and we should encourage folks to do so -- because doing so
 *does* help applications that need this distinction.  But the failure to
 make this distinction does *not* break the web architecture any more
 than a failure to distinguish between male dogs and female dogs.

 Thanks David, a nice summary of the most important point IMHO.

 Ok, I've been trying to rationalize the case where there is a failure
 to make the distinction, but that's very much secondary to the fact
 that nothing really gets broken.

 Cheers,
 Danny.

 http://danny.ayers.name



 
 IHMC                                     (850)434 8903 or (650)494 3973
 40 South Alcaniz St.           (850)202 4416   office
 Pensacola                            (850)202 4440   fax
 FL 32502                              (850)291 0667   mobile
 phayesAT-SIGNihmc.us       http://www.ihmc.us/users/phayes









-- 
http://danny.ayers.name



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Henry Story

On 19 Jun 2011, at 06:05, Pat Hayes wrote:

 Really (sorry to keep raining on the parade, but) it is not as simple as 
 this. Look, it is indeed easy to not bother distinguishing male from female 
 dogs. One simply talks of dogs without mentioning gender, and there is a lot 
 that can be said about dogs without getting into that second topic. But 
 confusing web pages, or documents more generally, with the things the 
 documents are about, now that does matter a lot more, simply because it is 
 virtually impossible to say *anything* about documents-or-things without 
 immediately being clear which of them - documents or things - one is talking 
 about. And there is a good reason why this particular confusion is so 
 destructive. Unlike the dogs-vs-bitches case, the difference between the 
 document and its topic, the thing, is that one is ABOUT the other. This is 
 not simply a matter of ignoring some potentially relevant information (the 
 gender of the dog) because one is temporarily not concerned with it: it is 
 two different ways of using the very names that are the fabric of the 
 descriptive representations themselves. It confuses language with language 
 use, confuses language with meta-language. It is like saying giraffe has 
 seven letters rather than giraffe has seven letters. Maybe this does not 
 break Web architecture, but it certainly breaks **semantic** architecture. It 
 completely destroys any semantic coherence we might, in some perhaps 
 impossibly optimistic vision of the future, manage to create within the 
 semantic web. So yes indeed, the Web will go on happily confusing things with 
 documents, partly because the Web really has no actual contact with things at 
 all: it is entirely constructed from documents (in a wide sense). But the 
 SEMANTIC Web will wither and die, or perhaps be still-born, if it cannot find 
 some way to keep use and mention separate and coherent.

The way to do this is to build applications where this thing matters. So for 
example in the social web we could build
a slightly more evolved like protocol/ontology, which would be decentralised 
for one, but would also allow one to distinguish documents, from other parts of 
documents and things. So one could then say that one wishes to bring people's 
attention to a well written article on a rape, rather than having to like the 
rape. Or that one wishes to bring people's attention to the content of an 
article without having to like the style the article is written in.

If such applications take hold, and there is a way the logic of using these 
applications is made to work where these distinctions become useful and visible 
to the end user, then there will be millions of vocal supporters of this 
distinction - which we know exists, which programmers know exists, which pretty 
much everyone knows exists, but which people new to the semweb web, like the 
early questioners of the viability of the mouse and the endless debates about 
that animal, will question because they can't feel in their bones the reality 
of this thing.

 So far, http-range-14 is the only viable suggestion I have seen for how to do 
 this.

Well hash uris are of course a lot easier to understand. http-range-14 is 
clearly a solution which is good to know about but that will have an adoption 
problem.


 If anyone has a better one, let us discuss it.

I am of the view that this has been discussed to death, and that any mailing 
list that discusses this is short of real things to do.

One could argue much more fruitfully on DocumentObject ontologies, and it would 
be interesting to see where that leads one.

 But just blandly assuming that it will all come out in the wash is a bad 
 idea. It won't. 

Well these are logical necessities you are speaking of. So it will come out in 
the wash. Just like 2+2=4, those who wish to ignore it will loose out in a 
number of transactions. 

So the fun thing is that we can find completely coherent ontologies that don't 
brake the semweb and that would allow Richard Cyganiak to write

 http://richard.cyganiak.de/ a foaf:Document;
   dofoaf:name Richard Cyganiak;
   dc:title: Richard Cyganiak's homepage;
   dofoaf:knows http://bblfish.net/ .

It looks like here that the document has been confused with the object, but in 
fact the relations are designed so that they indirectly refer to something 
else. Now it is not clear that this is easier or less confusing to write than 
pure foaf. But it does make it look like what Danny wants to have is happening, 
namely that the document refers to the thing too - assuming a document only 
refers to one thing. But that is already the main problem. Even an image never 
refers to one thing only. Take a simple image of the eiffel tower: there can be 
cars in it, there can be birds, mice, rats (ratatouille), and many other 
creatures jumping around on people's heads. The higher the resolution the more 
things that picture can be said to refer to. So to know which is the 

Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Kingsley Idehen

On 6/19/11 7:43 AM, Danny Ayers wrote:

Point taken Pat but I have been in the same ring as you for many
years, but to progress the Web  can't we just take our hands off
the wheel, let it go where it wants. (Not that I have any influence,
and realistically you neither Pat). I'm now just back from a
sabbatical, but right now would probably be a good time to take one.
If these big companies do engage on the microdata front, it's great.
I'm sure it's been said before, why don't we get pornographers working
hard on their metadata on visuals, because they work for Google/Bing
whatever. The motivation right now might not be towards Tim's day one
goals of sharing some stuff between departments at CERN, but that's
irrelevant in the longer term. Getting the the Web as an
infrastructure for data seems like a significant step in human
evolution. And it's a no-brainer. But getting from where we are to
there is tricky. Honestly, I don't care. It'll happen, my remaining
lifespan or about 50 on top, there will be another, big, revolution.

Society is already so different, just with little mobile phones.

/gak I'm no going to speculate, we're heading for a major change.


Danny,

Do you agree with HTTP-range-14 finding or not?

My gripe with HTTP-range-14 is all about aesthetic matters re. language 
and anecdote choices, not the core concept it attempts to articulate. If 
you clearly state your gripe in similar terms there could be a chance of 
yourself and Pat actually realizing that you are in agreement. 
Personally, I've always assumed you clearly groked why Name and Address 
disambiguation is vital re. Web's data space dimension. I am suspecting 
that you are saying: we should find ways to co-exist with initiatives 
(e.g. schema.org) that haven't addressed these matters, just yet etc..


Note: many are grappling with how to construct viable business models 
from Linked Data, thus in some cases you will have services that look 
like they don't care about Name and Address disambiguation on the 
outside, courtesy of their publicly accessible resources, while in 
reality they understand these matters very well and have put them you 
use for a while. Remember, a URI doesn't have to be public :-)  I think 
the debate will ultimately be more about getting these big players to 
share their more powerful URIs with the public via services and apps 
from communities like this that make the opportunity costs of these big 
players palpable :-)



Kingsley

Cheers,
Danny.

On 19 June 2011 06:05, Pat Hayespha...@ihmc.us  wrote:

Really (sorry to keep raining on the parade, but) it is not as simple as this. Look, it 
is indeed easy to not bother distinguishing male from female dogs. One simply talks of 
dogs without mentioning gender, and there is a lot that can be said about dogs without 
getting into that second topic. But confusing web pages, or documents more generally, 
with the things the documents are about, now that does matter a lot more, simply because 
it is virtually impossible to say *anything* about documents-or-things without 
immediately being clear which of them - documents or things - one is talking about. And 
there is a good reason why this particular confusion is so destructive. Unlike the 
dogs-vs-bitches case, the difference between the document and its topic, the thing, is 
that one is ABOUT the other. This is not simply a matter of ignoring some potentially 
relevant information (the gender of the dog) because one is temporarily not concerned 
with it: it is two different ways of using the very names that are the fabric of the 
descriptive representations themselves. It confuses language with language use, confuses 
language with meta-language. It is like saying giraffe has seven letters rather than 
giraffe has seven letters. Maybe this does not break Web architecture, but it 
certainly breaks **semantic** architecture. It completely destroys any semantic coherence 
we might, in some perhaps impossibly optimistic vision of the future, manage to create 
within the semantic web. So yes indeed, the Web will go on happily confusing things with 
documents, partly because the Web really has no actual contact with things at all: it is 
entirely constructed from documents (in a wide sense). But the SEMANTIC Web will wither 
and die, or perhaps be still-born, if it cannot find some way to keep use and mention 
separate and coherent. So far, http-range-14 is the only viable suggestion I have seen 
for how to do this. If anyone has a better one, let us discuss it. But just blandly 
assuming that it will all come out in the wash is a bad idea. It won't.

Pat

On Jun 18, 2011, at 1:51 PM, Danny Ayers wrote:


On 17 June 2011 02:46, David Boothda...@dbooth.org  wrote:


I agree with TimBL that it is *good* to distinguish between web pages
and dogs -- and we should encourage folks to do so -- because doing so
*does* help applications that need this distinction.  But the failure to
make this distinction does *not* 

Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Dave Reynolds
Hi Hugh,

 By the way, as is well-known I think, a lot of people use and therefore must 
 be happy with URIs that are not Range-14 compliant, such as 
 http://www.w3.org/2000/01/rdf-schema .

Your general point that there is non-compliant data out there that
people are still able to make use of is probably right, but that
specific example is compliant - those are all (even the ontology URI)
hash-URIs.

Dave





Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Henry Story

On 19 Jun 2011, at 13:05, Hugh Glaser wrote:

 A step too far?
 
 Hi.
 I've sort of been waiting for someone to say:
 I have a system that consumes RDF from the world out there (eg dbpedia), and 
 it would break and be unfixable if the sources didn't do 303 or #.
 Plenty of people saying they can't express what they want without it.
 And plenty of people saying they can't write some code that they might not be 
 able to understand some RDF they receive properly.
 But no actual examples in the wild (at least as far as I can tell in a lot of 
 messages).
 
 This might be for quite a few reasons, such as:
 1) There are no such consuming systems;
 2) The existing consuming systems would not break.
 
 Number (1) would be too embarrassing, and is wrong because I have some, so 
 I'll think about number (2).

As you point out there are some consuming systems but they are not very 
distributed: you know ahead of time what you will find there, and so you can 
adapt your parsing for the few special cases. At that level the XML crowd/JSON 
crowd are right - rdf does not give you much. In fact it makes it easier to do 
things wrong. So we should be supporting more RESTful XML that can be GRDDLed 
with X-SPARQL.

The semweb gives you a lot more when things get even more distributed, such as 
when everyone starts having foaf files on billions of computers. At that point 
nobody will want to tweak their app for the specific data at one site. Also one 
will want to be careful of the difference between documents and things, for the 
same reason I pointed out with the like button in Facebook. So for the moment 
the errors don't appear, because we are few consumers and few producers, and we 
can work around mistakes manually on a case by case basis.

To get a real linked data application you need:
 1- data that is produced in a completely decentralised way
 2- data that is linked between those decentralised nodes
 3- data that is consumed, and where the consumption has real world effects
  
 
Number 3 is the recursive feedback piece that will make 1 and 2 come to a point 
of stability, or meta-stability, as we are dealing with self organising systems 
here.
 
This can be done with the social web. We need systems where you publishing data 
means that I can do something, learn something about you, and so on... but 
without you ever knowing ahead of time what software or services we are using. 
(( The Twitters and other Web2.0 folks have made their life easy by 
centralising data publishing and consumption as much as possible. For systems 
like there is no real communication problem: there is a central dictator and he 
says what the meaning of the terms go. As things evolve that part even escapes 
him - the way office document formats escaped M$ - because of the huge number 
of people and software dependent on the initial meaning produced.))

If I write things out wrong, your software should be able to let me know about 
it. Just as if we organise to meet but we
give each other the wrong address, we will end up missing the meeting. If this 
were not so then giving out addresses and organising meetings would be a very 
different exercise.



 There seem to be some axes in the discussion:
 publish / consume
 long/medium term / shorter term
 ideal / pragmatic
 Interestingly, we don't seem to have a strong theory / practice axis, which 
 is great.

yes, my point has been we need to work on small vocabularies, widely 
distributed, widely used, to kick start the rest of the system

 
 As a publisher, I/we have had to work pretty hard to conform to really quite 
 complex requirements for publishing RDF as Linked Data; not just Range-14, 
 but voiD, sitemaps and various bits and pieces that Kingsley always tells me 
 to do in the RDF.
 As a consumer, it has been pretty simple: Well guv, thanks for the URI, 
 here's some RDF.
 It has always been something of a source of angst (if not actual pain) to me 
 that none of the extra work I put into publishing RDF is ever used by me or 
 anyone else, as far as I know.
 In fact, some of the sites I consume actually don't do things properly - I 
 might have had to change my consuming systems to cope with this, but I don't, 
 because they already cope fine.
 Why is it not a problem? One obvious reason is that the consuming application 
 is actually looking for specific knowledge about things.

And as pointed out above they are not that distributed, and the consequences of 
things going wrong on a lot of the open data stack is not that big yet.

 I don't have a consuming system that is considering both lexical and animal 
 subjects, and so confusion does not arise.

Also you are probably not putting up reasoners yet. 

 In fact, it is the predicates that tend to distinguish satisfactorily for me 
 (as has been pointed out by some people).
 Thus, if I get a triple that says the URI that would resolve to my Facebook 
 page foaf:knows the URI that would resolve to your Facebook page, I (my 
 system) 

Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Kingsley Idehen

On 6/19/11 12:05 PM, Hugh Glaser wrote:

A step too far?

Hi.
I've sort of been waiting for someone to say:
I have a system that consumes RDF from the world out there (eg dbpedia), and it 
would break and be unfixable if the sources didn't do 303 or #.
Plenty of people saying they can't express what they want without it.
And plenty of people saying they can't write some code that they might not be 
able to understand some RDF they receive properly.
But no actual examples in the wild (at least as far as I can tell in a lot of 
messages).

This might be for quite a few reasons, such as:
1) There are no such consuming systems;
2) The existing consuming systems would not break.

Number (1) would be too embarrassing, and is wrong because I have some, so I'll 
think about number (2).

There seem to be some axes in the discussion:
publish / consume
long/medium term / shorter term
ideal / pragmatic
Interestingly, we don't seem to have a strong theory / practice axis, which is 
great.

As a publisher, I/we have had to work pretty hard to conform to really quite 
complex requirements for publishing RDF as Linked Data; not just Range-14, but 
voiD, sitemaps and various bits and pieces that Kingsley always tells me to do 
in the RDF.
As a consumer, it has been pretty simple: Well guv, thanks for the URI, here's some 
RDF.
It has always been something of a source of angst (if not actual pain) to me 
that none of the extra work I put into publishing RDF is ever used by me or 
anyone else, as far as I know.


Er. we use it :-)

The problem with this whole Linked Data thing is that its truly Ninja tech.

The killer conductor of value is the LINK. This lethal weapon applies to 
all dimensions of the Web:


1. Information Space
2. Data Space
3. Knowledge Space.

Trouble is, where do we find strong anecdotes for a cross dimensional 
lethal weapon? I try to use Stars Wars and the FORCE at times, but even 
that doesn't quite nail what we are dealing with here. Thus, we could 
take another approach i.e., embrace and extend what we know is anomalous 
since the AWWW architecture (FORCE) actually lets us do this anyway.




In fact, some of the sites I consume actually don't do things properly - I 
might have had to change my consuming systems to cope with this, but I don't, because 
they already cope fine.


Exactly! You are using the FORCE :-)


Why is it not a problem? One obvious reason is that the consuming application 
is actually looking for specific knowledge about things.
I don't have a consuming system that is considering both lexical and animal 
subjects, and so confusion does not arise.


You have a Data Space dimension app. The Information Space dimension 
doesn't interfere with your world view. This is key in many ways. For 
instance, imagine if your app was of the Information Space dimension 
instead, the effect would be very close to what we see today re. those 
that see Name and Address disambiguation as impractical overkill since 
nothing breaks in the world they experience.



In fact, it is the predicates that tend to distinguish satisfactorily for me 
(as has been pointed out by some people).


Yep! The Data Space realm lets you Describe anything with clarity, and 
even when unclear, agents can ultimately agree to disagree without 
obliteration.



Thus, if I get a triple that says the URI that would resolve to my Facebook 
page foaf:knows the URI that would resolve to your Facebook page, I (my system) 
will happily interpret that as one person (or whatever) foaf:knows the other. I 
certainly don't want to go and resolve these to find out to what the URIs 
actually resolve. And if I did, what would I do about it? Ignore it?


As you would in code generally, encounter an exception, and decide if 
you avoid making it a critical fault :-)



In fact, as has also been mentioned, you can define domains, ranges and 
restrictions for as long as you like, but it is quite possible and likely that 
the users of URIs will continue blissfully unaware of any of this, in exactly 
the same way that they continue unaware that there might be something ambiguous 
about the URIs they are using.



Yes, when they operate in the Information Space dimension.


By the way, as is well-known I think, a lot of people use and therefore must be 
happy with URIs that are not Range-14 compliant, such as 
http://www.w3.org/2000/01/rdf-schema .


In the Information Space dimension, yes. In that dimension it doesn't 
matter.



When we help people publish, it really is tough to engage them long enough to 
care about the complex issues, and they often get it wrong - I am engaged with 
quite a few people who are now publishing serious amounts of interesting RDF 
where I have contacted them to try to help. The status of the conversations is 
that they have fixed what they can, and are now thinking (for a long time) 
about how they might configure their systems to do it properly - but they may 
never get there. I will still want to use their 

Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Henry Story

On 19 Jun 2011, at 14:04, Kingsley Idehen wrote:

 
 Er. we use it :-)
 
 The problem with this whole Linked Data thing is that its truly Ninja tech.
 
 The killer conductor of value is the LINK. This lethal weapon applies to all 
 dimensions of the Web:
 
 1. Information Space
 2. Data Space
 3. Knowledge Space.
 
 Trouble is, where do we find strong anecdotes for a cross dimensional lethal 
 weapon? I try to use Stars Wars and the FORCE at times, but even that doesn't 
 quite nail what we are dealing with here. Thus, we could take another 
 approach i.e., embrace and extend what we know is anomalous since the AWWW 
 architecture (FORCE) actually lets us do this anyway.

That's a fun way of describing things. But we have to be careful not to hype 
things too much, or we risk being tied into the 1980 AI hype space, and then 
nobody will listen anymore. 

Perhaps a more scientific way to express this is within the language of 
self-organising systems. There is a lot of research there which is relevant to 
us.

  http://en.wikipedia.org/wiki/Self_organising_systems

I am a bit new to this area. Any books I must read?

Henry


Social Web Architect
http://bblfish.net/




Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Hugh Glaser
Thanks Henry.
Just to be clear on one point:

On 19 Jun 2011, at 12:44, Henry Story wrote:
snip /
 
 When we help people publish, it really is tough to engage them long enough 
 to care about the complex issues, and they often get it wrong - I am engaged 
 with quite a few people who are now publishing serious amounts of 
 interesting RDF where I have contacted them to try to help. The status of 
 the conversations is that they have fixed what they can, and are now 
 thinking (for a long time) about how they might configure their systems to 
 do it properly - but they may never get there. I will still want to use 
 their RDF.
 
 yes, in these case by case scenarios it is easy for you to write special case 
 filters. And we could do the
 same thing with HTML whenever we browse the web too. But the web had an 
 application: the browser that lead to 
 feedback effects that increased the coherence of the system.
 
snip /
But I don't write special case filters - if I did it would not consider it 
Semantic Web.
I simply follow my nose to use the URI (or in fact usually via an owl:sameas in 
a sameas store), and they work.
It all works because my code that consumes the retrieved RDF to build the data 
enrichment by inference (things like the communities of practice), and things 
like my fresnel lenses, restrict any ambiguity by looking for the predicates, 
etc. they care about.
RDF can be a long way short of what we want it to be without having to treat it 
as special cases.


Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Henry Story

On 12 Jun 2011, at 14:40, Danny Ayers wrote:

 [snip]
 Aside from containing a different bunch of bits because of the
 encoding, sasha-photo.jpg could be a lossy-compressed version of
 sasha-photo.gif, containing less pixel information yet sharing many
 characteristics.
 
 All ok so far..?
 
 If so, from this we can determine that a representation of a resource
 need not be complete in terms of the information it contains to
 fulfill the RDF statement and the HTTP contract.

A photo and a graph work in essentially the same way. They both set 
restrictions on possible worlds of which they are true. A photo restricts the 
number of possible worlds to those that are visually equivalent to the picture 
taken. A graph is true of all the possible worlds where those relations holds - 
which is usually infinitely large.

In either case the meaning of a graph or document is a set of possible worlds. 
A set is an object - one can speak of it - but a very different kind of object 
from what you may think of as what appears in the picture. As such there is 
indeed a fundamental logical difference between a document and objects in the 
world. And that also explains why a photo is not clearly about one thing or 
another - though of course given that it is a restriction on the way things can 
be, it limits the things the document could be about. 

As stated in a previous mail, the same photo can be about the eiffel tower, a 
sunset, a beautiful view of Paris, a vacation experience, a friend that appears 
in the picture, a murder that was commited at that moment,... The photo remains 
the same in all those descriptions, and it can be tagged in all those ways, 
which is why it is good to have names for each of those things that are 
different from the photo. Each of those should have definite descriptions to 
help identify the referents from the description.

Henry

Social Web Architect
http://bblfish.net/




Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Hugh Glaser

On 19 Jun 2011, at 13:04, Kingsley Idehen wrote:

 On 6/19/11 12:05 PM, Hugh Glaser wrote:
 A step too far?
 
 Hi.
 I've sort of been waiting for someone to say:
 I have a system that consumes RDF from the world out there (eg dbpedia), 
 and it would break and be unfixable if the sources didn't do 303 or #.
 Plenty of people saying they can't express what they want without it.
 And plenty of people saying they can't write some code that they might not 
 be able to understand some RDF they receive properly.
 But no actual examples in the wild (at least as far as I can tell in a lot 
 of messages).
 
 This might be for quite a few reasons, such as:
 1) There are no such consuming systems;
 2) The existing consuming systems would not break.
 
 Number (1) would be too embarrassing, and is wrong because I have some, so 
 I'll think about number (2).
 
 There seem to be some axes in the discussion:
 publish / consume
 long/medium term / shorter term
 ideal / pragmatic
 Interestingly, we don't seem to have a strong theory / practice axis, which 
 is great.
 
 As a publisher, I/we have had to work pretty hard to conform to really quite 
 complex requirements for publishing RDF as Linked Data; not just Range-14, 
 but voiD, sitemaps and various bits and pieces that Kingsley always tells me 
 to do in the RDF.
 As a consumer, it has been pretty simple: Well guv, thanks for the URI, 
 here's some RDF.
 It has always been something of a source of angst (if not actual pain) to me 
 that none of the extra work I put into publishing RDF is ever used by me or 
 anyone else, as far as I know.
 
 Er. we use it :-)
Er, I'm not sure you do :-)
You certainly consume it, and a very nice job you do to.
But the use is more than generic browsers - it suggest to me that something 
useful might happen as a result of the consumption (perhaps I learn that I can 
ask Jim to introduce me to Mary, as he knows her better than anyone else I 
know).
These things are usually called applications, or possibly services.
They tend to be reasonably domain-specific, as generic things tend not to be 
easy to sue, or even fit for purpose for end users.
Sorry if I have missed stuff.

 The problem with this whole Linked Data thing is that its truly Ninja tech.
 
 The killer conductor of value is the LINK. This lethal weapon applies to all 
 dimensions of the Web:
 
 1. Information Space
 2. Data Space
 3. Knowledge Space.
 
 Trouble is, where do we find strong anecdotes for a cross dimensional lethal 
 weapon? I try to use Stars Wars and the FORCE at times, but even that doesn't 
 quite nail what we are dealing with here. Thus, we could take another 
 approach i.e., embrace and extend what we know is anomalous since the AWWW 
 architecture (FORCE) actually lets us do this anyway.
 
 
 In fact, some of the sites I consume actually don't do things properly - I 
 might have had to change my consuming systems to cope with this, but I 
 don't, because they already cope fine.
 
 Exactly! You are using the FORCE :-)
 
 Why is it not a problem? One obvious reason is that the consuming 
 application is actually looking for specific knowledge about things.
 I don't have a consuming system that is considering both lexical and animal 
 subjects, and so confusion does not arise.
 
 You have a Data Space dimension app. The Information Space dimension doesn't 
 interfere with your world view. This is key in many ways. For instance, 
 imagine if your app was of the Information Space dimension instead, the 
 effect would be very close to what we see today re. those that see Name and 
 Address disambiguation as impractical overkill since nothing breaks in the 
 world they experience.
 
 In fact, it is the predicates that tend to distinguish satisfactorily for me 
 (as has been pointed out by some people).
 
 Yep! The Data Space realm lets you Describe anything with clarity, and even 
 when unclear, agents can ultimately agree to disagree without obliteration.
 
 Thus, if I get a triple that says the URI that would resolve to my Facebook 
 page foaf:knows the URI that would resolve to your Facebook page, I (my 
 system) will happily interpret that as one person (or whatever) foaf:knows 
 the other. I certainly don't want to go and resolve these to find out to 
 what the URIs actually resolve. And if I did, what would I do about it? 
 Ignore it?
 
 As you would in code generally, encounter an exception, and decide if you 
 avoid making it a critical fault :-)
 
 In fact, as has also been mentioned, you can define domains, ranges and 
 restrictions for as long as you like, but it is quite possible and likely 
 that the users of URIs will continue blissfully unaware of any of this, in 
 exactly the same way that they continue unaware that there might be 
 something ambiguous about the URIs they are using.
 
 
 Yes, when they operate in the Information Space dimension.
 
 By the way, as is well-known I think, a lot of people use and therefore must 
 be happy with URIs 

Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Giovanni Tummarello

 particular confusion is so destructive. Unlike the dogs-vs-bitches case,
 the difference between the document and its topic, the thing, is that one is
 ABOUT the other. This is not simply a matter of ignoring some


Could it be exactly the other way around? that documents and things
described in it are easy to distinguis EXACTLY becouse one is about the
other, no one can possibly mess them up/except for idiotic computer
algorithms from the 70s that limits themselves to simbolic AI techniques.

Otherwise you seem to say that  its more difficult to distinguish between a
dog and a bitch than it is to distinguish between a dog and a stream of
bytes in return to an HTTP request, and that seems a bit funny?

look if someone points me at a facebook URL i know its about a person and
not about the damn page (which has 2000 ways to change every time that url
is resolved anyway.


 certainly breaks **semantic** architecture. It completely destroys any
 semantic coherence we might, in some perhaps impossibly optimistic vision of
 the future, manage to create within the semantic web. So yes indeed, the Web
 will go on happily confusing things with documents, partly because the Web
 really has no actual contact with things at all: it is entirely constructed
 from documents (in a wide sense). But the SEMANTIC Web will wither and die,
 or perhaps be still-born, if it cannot find some way to keep use and mention
 separate and coherent.



i mean we can go on and tell oursellf we cant possibly write applications
that know or understand what  facebook URL is about.

but dont be surprised as  less and less people will be willing to listen as
more and more applications (Eg.. all the stuff based  on schema.org) pop up
never knowing there was this problem... (not in general. of course there is
in general, but for their specific use cases)

Gio


Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Nathan

Nathan wrote:

Henry Story wrote:

On 19 Jun 2011, at 18:27, Giovanni Tummarello wrote:

but dont be surprised as  less and less people will be willing to 
listen as more and more applications (Eg.. all the stuff based  on 
schema.org) pop up never knowing there was this problem... (not in 
general. of course there is in general, but for their specific use 
cases)


The question is if schema.org makes the confusion, or if the schemas 
published there use a DocumentObject ontology where the distinctions 
are clear but the rule is that object relationships are in fact going 
via the primary topic of the document. I have not looked at the 
schema, but it seems that before arguing that they are inconsistent 
one should see if there is not a consistent interpretation of what 
they are doing.


Sorry, I'm missing something - from what I can see, each document has a 
number of items, potentially in a hierarchy, and each item is either 
anonymous, or has an @itemid.


Where's the confusion between Document and Primary Subject?


Or do you mean from the Schema.org side, where each Type and Property 
has a dereferencable URI, which currently happens to also eb used for 
the document describing the Type/Property?




Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Tim Berners-Lee
Absolutely, Pat. Well said.
This is really important.

Can we please stop the madness of confusing things with documents about them
and do what we want to do cleanly and in an efficient way.

Tim

On 2011-06 -19, at 00:05, Pat Hayes wrote:

 Really (sorry to keep raining on the parade, but) it is not as simple as 
 this. Look, it is indeed easy to not bother distinguishing male from female 
 dogs. One simply talks of dogs without mentioning gender, and there is a lot 
 that can be said about dogs without getting into that second topic. But 
 confusing web pages, or documents more generally, with the things the 
 documents are about, now that does matter a lot more, simply because it is 
 virtually impossible to say *anything* about documents-or-things without 
 immediately being clear which of them - documents or things - one is talking 
 about. And there is a good reason why this particular confusion is so 
 destructive. Unlike the dogs-vs-bitches case, the difference between the 
 document and its topic, the thing, is that one is ABOUT the other. This is 
 not simply a matter of ignoring some potentially relevant information (the 
 gender of the dog) because one is temporarily not concerned with it: it is 
 two different ways of using the very names that are the fabric of the 
 descriptive representations themselves. It confuses language with language 
 use, confuses language with meta-language. It is like saying giraffe has 
 seven letters rather than giraffe has seven letters. Maybe this does not 
 break Web architecture, but it certainly breaks **semantic** architecture. It 
 completely destroys any semantic coherence we might, in some perhaps 
 impossibly optimistic vision of the future, manage to create within the 
 semantic web. So yes indeed, the Web will go on happily confusing things with 
 documents, partly because the Web really has no actual contact with things at 
 all: it is entirely constructed from documents (in a wide sense). But the 
 SEMANTIC Web will wither and die, or perhaps be still-born, if it cannot find 
 some way to keep use and mention separate and coherent. So far, http-range-14 
 is the only viable suggestion I have seen for how to do this. If anyone has a 
 better one, let us discuss it. But just blandly assuming that it will all 
 come out in the wash is a bad idea. It won't. 
 
 Pat




Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Henry Story

On 19 Jun 2011, at 18:27, Giovanni Tummarello wrote:

 
 but dont be surprised as  less and less people will be willing to listen as 
 more and more applications (Eg.. all the stuff based  on schema.org) pop up 
 never knowing there was this problem... (not in general. of course there is 
 in general, but for their specific use cases)

The question is if schema.org makes the confusion, or if the schemas published 
there use a DocumentObject ontology where the distinctions are clear but the 
rule is that object relationships are in fact going via the primary topic of 
the document. I have not looked at the schema, but it seems that before arguing 
that they are inconsistent one should see if there is not a consistent 
interpretation of what they are doing.


Henry


 
 Gio
 

Social Web Architect
http://bblfish.net/



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Henry Story

On 19 Jun 2011, at 18:58, Nathan wrote:

 Nathan wrote:
 Henry Story wrote:
 On 19 Jun 2011, at 18:27, Giovanni Tummarello wrote:
 
 but dont be surprised as  less and less people will be willing to listen 
 as more and more applications (Eg.. all the stuff based  on schema.org) 
 pop up never knowing there was this problem... (not in general. of course 
 there is in general, but for their specific use cases)
 
 The question is if schema.org makes the confusion, or if the schemas 
 published there use a DocumentObject ontology where the distinctions are 
 clear but the rule is that object relationships are in fact going via the 
 primary topic of the document. I have not looked at the schema, but it 
 seems that before arguing that they are inconsistent one should see if 
 there is not a consistent interpretation of what they are doing.
 Sorry, I'm missing something - from what I can see, each document has a 
 number of items, potentially in a hierarchy, and each item is either 
 anonymous, or has an @itemid.
 Where's the confusion between Document and Primary Subject?
 
 Or do you mean from the Schema.org side, where each Type and Property has a 
 dereferencable URI, which currently happens to also eb used for the document 
 describing the Type/Property?

Well I can't really tell because I don't know what the semantics of those 
annotations are, or how they function. Without those it is difficult to tell if 
they have made a mistake. If there is no way of translating what they are doing 
into a system that does not make the confusion, then one could explore what the 
cost of that will be to them. If the confusion is strong then there will be 
limitations in what they can express that way. It will then be a matter of 
working out what those limitations are and then offering services that allow 
one to go further than what they are proposing. At the very least the good 
thing is that they are not bringing the confusion into the RDF space, since 
they are using their own syntax and ontologies. 

There may also be an higher way to fix this so that they could return a 20x 
(x-some new number) which points to the document URL (but returns the 
representation immediately, a kind of efficient HTTP-range-14 version) So there 
are a lot of options. Currently their objects are tied to an html document. 
What are the json crowd going to think? 

In any case there is a problem of translation that has to be dealt with first. 

Henry

Social Web Architect
http://bblfish.net/




Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Danny Ayers
On 19 June 2011 12:37, Henry Story henry.st...@bblfish.net wrote:

[snip pat]

 The way to do this is to build applications where this thing matters. So for 
 example in the social web we could build
 a slightly more evolved like protocol/ontology, which would be 
 decentralised for one, but would also allow one to distinguish documents, 
 from other parts of documents and things. So one could then say that one 
 wishes to bring people's attention to a well written article on a rape, 
 rather than having to like the rape. Or that one wishes to bring people's 
 attention to the content of an article without having to like the style the 
 article is written in.

I would have come down on you like a ton of bricks for that Henry, if
it wasn't for seeing to-and-fro on Facebook about some Nazi-inspired
club (Slimelight, for the record). On FB there is no way to express
your sentiments. Like/blow to smithereens.

 If such applications take hold, and there is a way the logic of using these 
 applications is made to work where these distinctions become useful and 
 visible to the end user, then there will be millions of vocal supporters of 
 this distinction - which we know exists, which programmers know exists, which 
 pretty much everyone knows exists, but which people new to the semweb web, 
 like the early questioners of the viability of the mouse and the endless 
 debates about that animal, will question because they can't feel in their 
 bones the reality of this thing.


 So far, http-range-14 is the only viable suggestion I have seen for how to 
 do this.

 Well hash uris are of course a lot easier to understand. http-range-14 is 
 clearly a solution which is good to know about but that will have an adoption 
 problem.

 I am of the view that this has been discussed to death, and that any mailing 
 list that discusses this is short of real things to do.

I confess to talking bollocks when I should be coding.

Cheers,
Danny.

-- 
http://danny.ayers.name



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Henry Story

On 19 Jun 2011, at 19:44, Danny Ayers wrote:

 
 I am of the view that this has been discussed to death, and that any mailing 
 list that discusses this is short of real things to do.
 
 I confess to talking bollocks when I should be coding.

yeah, me too. Though now you folks managed to get me interested in this 
problem! (sigh)

Henry

Social Web Architect
http://bblfish.net/




Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Danny Ayers
I thought forever that if we see iniquities we are duty-bound to stand
in the way.

But that don't seem to change anything.

Let the crap rain forth, if you really need to make sense of it the
blokes on this list will do it.

Activity is GOOD, no matter how idiotic.

Decisions made on very different premises than anyone around here would promote.

Sorry, I'm of the opinion that the Web approach is the winner. Alas it
also seems lowest common denominator.

Cheers,
Danny.

On 19 June 2011 19:36, Henry Story henry.st...@bblfish.net wrote:

 On 19 Jun 2011, at 18:58, Nathan wrote:

 Nathan wrote:
 Henry Story wrote:
 On 19 Jun 2011, at 18:27, Giovanni Tummarello wrote:

 but dont be surprised as  less and less people will be willing to listen 
 as more and more applications (Eg.. all the stuff based  on schema.org) 
 pop up never knowing there was this problem... (not in general. of course 
 there is in general, but for their specific use cases)

 The question is if schema.org makes the confusion, or if the schemas 
 published there use a DocumentObject ontology where the distinctions are 
 clear but the rule is that object relationships are in fact going via the 
 primary topic of the document. I have not looked at the schema, but it 
 seems that before arguing that they are inconsistent one should see if 
 there is not a consistent interpretation of what they are doing.
 Sorry, I'm missing something - from what I can see, each document has a 
 number of items, potentially in a hierarchy, and each item is either 
 anonymous, or has an @itemid.
 Where's the confusion between Document and Primary Subject?

 Or do you mean from the Schema.org side, where each Type and Property has a 
 dereferencable URI, which currently happens to also eb used for the document 
 describing the Type/Property?

 Well I can't really tell because I don't know what the semantics of those 
 annotations are, or how they function. Without those it is difficult to tell 
 if they have made a mistake. If there is no way of translating what they are 
 doing into a system that does not make the confusion, then one could explore 
 what the cost of that will be to them. If the confusion is strong then there 
 will be limitations in what they can express that way. It will then be a 
 matter of working out what those limitations are and then offering services 
 that allow one to go further than what they are proposing. At the very least 
 the good thing is that they are not bringing the confusion into the RDF 
 space, since they are using their own syntax and ontologies.

 There may also be an higher way to fix this so that they could return a 20x 
 (x-some new number) which points to the document URL (but returns the 
 representation immediately, a kind of efficient HTTP-range-14 version) So 
 there are a lot of options. Currently their objects are tied to an html 
 document. What are the json crowd going to think?

 In any case there is a problem of translation that has to be dealt with first.

 Henry

 Social Web Architect
 http://bblfish.net/





-- 
http://danny.ayers.name



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Danny Ayers
Only personal Henry, but have you tried the Myers-Briggs thing - I
think you used to be classic INTP/INTF - but once you got WebID in
your sails it's very different. These things don't really allow for
change.

Only slightly off-topic, very relevant here, need to pin down WebID in
a sense my dogs can understand.

The Myers-Briggs thing is intuitively rubbish. But with only one or
two posts in the ground, it does seem you can extrapolate.

On 19 June 2011 19:52, Henry Story henry.st...@bblfish.net wrote:

 On 19 Jun 2011, at 19:44, Danny Ayers wrote:


 I am of the view that this has been discussed to death, and that any 
 mailing list that discusses this is short of real things to do.

 I confess to talking bollocks when I should be coding.

 yeah, me too. Though now you folks managed to get me interested in this 
 problem! (sigh)

 Henry

 Social Web Architect
 http://bblfish.net/





-- 
http://danny.ayers.name



Re: Fwd: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Nathan

Danny Ayers wrote:

I feel very guilty being in threads like this. Shit fuck smarter people than
me.


Just minor, and I can hardly talk as I swear most often in different 
settings, but I am a little surprised to see this language around here. 
I quite like having an arena where these words don't arise in the 
general conversation.


Ack you know what I'm saying - nothing personal, but I'd personally 
appreciate not seeing them too frequently around here :)


Best!



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Kingsley Idehen

On 6/19/11 1:39 PM, Henry Story wrote:

On 19 Jun 2011, at 14:04, Kingsley Idehen wrote:


Er. we use it :-)

The problem with this whole Linked Data thing is that its truly Ninja tech.

The killer conductor of value is the LINK. This lethal weapon applies to all 
dimensions of the Web:

1. Information Space
2. Data Space
3. Knowledge Space.

Trouble is, where do we find strong anecdotes for a cross dimensional lethal 
weapon? I try to use Stars Wars and the FORCE at times, but even that doesn't 
quite nail what we are dealing with here. Thus, we could take another approach 
i.e., embrace and extend what we know is anomalous since the AWWW architecture 
(FORCE) actually lets us do this anyway.

That's a fun way of describing things.


Fun is one mechanism for stimulating attention an route to unveiling new 
insights and innovations :-)



But we have to be careful not to hype things too much, or we risk being tied 
into the 1980 AI hype space, and then nobody will listen anymore.


I certainly don't have that in mind.

The only tweak I would make is: s/Ninja/Jedi, since Star Wars and its 
underlying mythology remains a great source of anecdotal material to me 
when I try to explain what's happening across the WWW's many dimensions.



Perhaps a more scientific way to express this is within the language of 
self-organising systems.


Every audience might not be scientifically inclined, at least not in an 
obvious way. Thus, as you can see, there isn't one way. We have to find 
and accommodate a plethora of narratives and associated anecdotes.



There is a lot of research there which is relevant to us.

   http://en.wikipedia.org/wiki/Self_organising_systems


Nice find, that is certainly representative of what's happening.


Kingsley


I am a bit new to this area. Any books I must read?



Henry


Social Web Architect
http://bblfish.net/






--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Kingsley Idehen

On 6/19/11 2:26 PM, Hugh Glaser wrote:

On 19 Jun 2011, at 13:04, Kingsley Idehen wrote:


On 6/19/11 12:05 PM, Hugh Glaser wrote:

A step too far?

Hi.
I've sort of been waiting for someone to say:
I have a system that consumes RDF from the world out there (eg dbpedia), and it 
would break and be unfixable if the sources didn't do 303 or #.
Plenty of people saying they can't express what they want without it.
And plenty of people saying they can't write some code that they might not be 
able to understand some RDF they receive properly.
But no actual examples in the wild (at least as far as I can tell in a lot of 
messages).

This might be for quite a few reasons, such as:
1) There are no such consuming systems;
2) The existing consuming systems would not break.

Number (1) would be too embarrassing, and is wrong because I have some, so I'll 
think about number (2).

There seem to be some axes in the discussion:
publish / consume
long/medium term / shorter term
ideal / pragmatic
Interestingly, we don't seem to have a strong theory / practice axis, which is 
great.

As a publisher, I/we have had to work pretty hard to conform to really quite 
complex requirements for publishing RDF as Linked Data; not just Range-14, but 
voiD, sitemaps and various bits and pieces that Kingsley always tells me to do 
in the RDF.
As a consumer, it has been pretty simple: Well guv, thanks for the URI, here's some 
RDF.
It has always been something of a source of angst (if not actual pain) to me 
that none of the extra work I put into publishing RDF is ever used by me or 
anyone else, as far as I know.

Er. we use it :-)

Er, I'm not sure you do :-)
You certainly consume it, and a very nice job you do to.
But the use is more than generic browsers - it suggest to me that something 
useful might happen as a result of the consumption (perhaps I learn that I can ask Jim to 
introduce me to Mary, as he knows her better than anyone else I know).


Yes, and this is coming. Basically, as part of the WebID (powerful 
Linked Data and FOAF exploitation) Henry, I, and others are working on 
use of our respective efforts for semantically enhanced friending. We 
not only handle friending we also handle notifications such that from a 
single blog post, address book entry, calendar item creation of change 
etc., notices get progagated, but all of this is driven by a WebID (a 
personal URI). In addition to all of this, we have WebID based ACLs for 
powerful resource sharing etc.. We (at OpenLink) have even extended 
S/MIME with WebID which makes a world of difference re. helping folks 
regain control of their in-boxes and basically fixing email.



These things are usually called applications, or possibly services.


Yes, that's the key to the matter. Make apps that make a difference via 
the standards we promote. Put differently, promote our beliefs via apps 
that illuminate standards that be believe in and promote.



They tend to be reasonably domain-specific, as generic things tend not to be 
easy to sue, or even fit for purpose for end users.
Sorry if I have missed stuff.


Address Books, Calendars, Blogs, Discussion Forums, Comments, Pingbacks, 
In-boxes  Drop-boxes, Photo Albums, and Galleries etc.. all benefit 
immensely from Linked Data, we just need more applications as a few have 
existed in isolation for a while :-)


Re. apps., one of the real problems with Linked Data is that the LINK is 
the key too everything. That said, when dealing with Apps., most think 
about UI first, and that's where matters can get confusing real fast 
i.e., some attempts at visualization utterly compromise Linked Data's 
essence. Likewise, slapping UI on to Linked Data with illuminating its 
essence in mind also introduces its own set of problems.


[SNIP]

--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Kingsley Idehen

On 6/19/11 5:56 PM, Nathan wrote:

Henry Story wrote:

On 19 Jun 2011, at 18:27, Giovanni Tummarello wrote:

but dont be surprised as  less and less people will be willing to 
listen as more and more applications (Eg.. all the stuff based  on 
schema.org) pop up never knowing there was this problem... (not in 
general. of course there is in general, but for their specific use 
cases)


The question is if schema.org makes the confusion, or if the schemas 
published there use a DocumentObject ontology where the distinctions 
are clear but the rule is that object relationships are in fact going 
via the primary topic of the document. I have not looked at the 
schema, but it seems that before arguing that they are inconsistent 
one should see if there is not a consistent interpretation of what 
they are doing.


Sorry, I'm missing something - from what I can see, each document has 
a number of items, potentially in a hierarchy, and each item is either 
anonymous, or has an @itemid.


Where's the confusion between Document and Primary Subject?




Put differently, are they conflating things i.e., leaving the beholder 
to make the distinction outside AWWW. Yes, they are, but purely because 
this effort is Information Space dimension based :-)


Time for a video [1].

Links:

1. http://www.youtube.com/watch?v=JkxieS-6WuA -- imaging the 10th dimension


--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Kingsley Idehen

On 6/19/11 6:36 PM, Henry Story wrote:

On 19 Jun 2011, at 18:58, Nathan wrote:


Nathan wrote:

Henry Story wrote:

On 19 Jun 2011, at 18:27, Giovanni Tummarello wrote:


but dont be surprised as  less and less people will be willing to listen as 
more and more applications (Eg.. all the stuff based  on schema.org) pop up 
never knowing there was this problem... (not in general. of course there is in 
general, but for their specific use cases)

The question is if schema.org makes the confusion, or if the schemas published 
there use a DocumentObject ontology where the distinctions are clear but the 
rule is that object relationships are in fact going via the primary topic of 
the document. I have not looked at the schema, but it seems that before arguing 
that they are inconsistent one should see if there is not a consistent 
interpretation of what they are doing.

Sorry, I'm missing something - from what I can see, each document has a number 
of items, potentially in a hierarchy, and each item is either anonymous, or has 
an @itemid.
Where's the confusion between Document and Primary Subject?

Or do you mean from the Schema.org side, where each Type and Property has a 
dereferencable URI, which currently happens to also eb used for the document 
describing the Type/Property?

Well I can't really tell because I don't know what the semantics of those 
annotations are, or how they function. Without those it is difficult to tell if 
they have made a mistake. If there is no way of translating what they are doing 
into a system that does not make the confusion, then one could explore what the 
cost of that will be to them. If the confusion is strong then there will be 
limitations in what they can express that way. It will then be a matter of 
working out what those limitations are and then offering services that allow 
one to go further than what they are proposing. At the very least the good 
thing is that they are not bringing the confusion into the RDF space, since 
they are using their own syntax and ontologies.

There may also be an higher way to fix this so that they could return a 20x 
(x-some new number) which points to the document URL (but returns the 
representation immediately, a kind of efficient HTTP-range-14 version) So there 
are a lot of options. Currently their objects are tied to an html document. 
What are the json crowd going to think?


Microdata as espoused by schema.org, via actual Microdata spec, includes 
a rules for making JSON representations. Irrespective, the conflation of 
entity Name and representation Address ultimately remains. But again, in 
the Information Space realm these ambiguities are the norm. Thus, it 
ultimately boils down to bridge vocabularies and ontologies to solve 
this problem re. Data Space dimension exploitation.


Personally, I just don't loose sleep over schema.org, its a great 
contribution that ultimately simplifies comprehension of the Data Space 
dimension. Remember, we humans don't do well with prevention, we prefer 
cure (via pills ideally) that are immediately available once calamities 
manifest :-)

In any case there is a problem of translation that has to be dealt with first.


Yes-ish.

Kingsley

Henry

Social Web Architect
http://bblfish.net/






--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Self-star Systems (was: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...] )

2011-06-19 Thread David Wood
+1 to Netlogo!

Regards,
Dave




On Jun 19, 2011, at 18:52, John Erickson wrote:

 Henry Story asked...
 
 Perhaps a more scientific way to express this is within the language of 
 self-organising systems. There is a lot of research there which is relevant 
 to us.
 
  http://en.wikipedia.org/wiki/Self_organising_systems
 
 I am a bit new to this area. Any books I must read?
 
 I responded to Henry personally with the following, which Henry
 suggested I send to the list...
 
 snip
 Caution: The study of self-organizing systems will keep you up all
 night with its coolness! ;)
 
 You asked for some book recommendations; these are a few on my shelf.
 I think the only required reading is Out of Control, which will
 blow you mind, and the rest will just complement that ;)
 
 1. Kevin Kelly, Out of Control
 2. Mikhail Prokopenko (ed), Advances in Applied Self-Organizing Systems
 3. Ozalp Babaoglu, et.al., Self-star Properties in Complex Information 
 Systems
 4. Yaneer Bar-Yam, Dynamics of Complex Systems
 5. Martin A. Nowak, Evolutionary Dynamics: Exploring the Equations of Life
 
 An example chapter from Nowak: Evolutionary Graph Theory ;)
 
 BTW, if you haven't already, install NetLego
 http://ccl.northwestern.edu/netlogo/ immediately. Serious work going
 on there, but very accessible!
 
 /snip
 
 
 -- 
 John S. Erickson, Ph.D.
 http://bitwacker.com
 olyerick...@gmail.com
 Twitter: @olyerickson
 Skype: @olyerickson
 




Re: WebID and pets -- was: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-19 Thread Melvin Carvalho
On 19 June 2011 20:42, Henry Story henry.st...@bblfish.net wrote:

 On 19 Jun 2011, at 20:15, Danny Ayers wrote:

 Only personal Henry, but have you tried the Myers-Briggs thing - I
 think you used to be classic INTP/INTF - but once you got WebID in
 your sails it's very different. These things don't really allow for
 change.

 Is there a page where I can find this out in one click? Looks like those 
 pages ask all kinds of questions that require detailed and complicated 
 answers. I am surprised anyone ever answers those things. It's certainly more 
 complex than the Object/Document distinction ;-)

Myers Briggs is based on the Jungian analysis of mythology and
personality types, with a few additions.  Myths being public dreams,
and dreams being private myths.

The personality types are the lens from which we interpret the inner
and outer universal symbols.  e.g. Intuitively / Analytically / Senses
/ Feeling.  But the symbols themselves are often the more fascinating
parts.

An interesting parallel here is the relation to Jung's archetypes of
the unconscious and WebID.  Both in your dreams, and in mythology, you
have symbols where are metaphors that reference some universal
concept.  WebID is of course a reference to the self ( foaf : Person
).

As many of the myths we live with today are 100s of years out of date,
and people are searching for something new, perhaps WebID can become a
modern symbol, to determine or even evangelize the new personality
type of society, post information revolution :)


 Only slightly off-topic, very relevant here, need to pin down WebID in
 a sense my dogs can understand.

 Ok. So you need to give each of your dogs and cats a webid enabled RDFID chip 
 that can publish webids to other animals with similarly equipped chips when 
 they sniff them. From the frequence and length of sniffs  you can work out 
 the quality of the relationships. On coming home for food, this data could be 
 uploaded automatically to your web server to their foaf file. These 
 relationships could then be used to allow their pals access to parts of your 
 house. For example good friends of your dog, could get a free meal once a 
 week. You could also use that to tie up friendship with their owners, by the 
 master-of-pet relationships, and give them special ability to tag their pet 
 photos. Masters of my dogs friends could be potential friends. If you get 
 these pieces working right you could set up a business with a strong viral 
 potential, perhaps the strongest on the net.

 Here to make my point:




 The Myers-Briggs thing is intuitively rubbish. But with only one or
 two posts in the ground, it does seem you can extrapolate.

 On 19 June 2011 19:52, Henry Story henry.st...@bblfish.net wrote:

 On 19 Jun 2011, at 19:44, Danny Ayers wrote:


 I am of the view that this has been discussed to death, and that any 
 mailing list that discusses this is short of real things to do.

 I confess to talking bollocks when I should be coding.

 yeah, me too. Though now you folks managed to get me interested in this 
 problem! (sigh)

 Henry

 Social Web Architect
 http://bblfish.net/





 --
 http://danny.ayers.name

 Social Web Architect
 http://bblfish.net/






Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-18 Thread Danny Ayers
On 16 June 2011 22:39, Pat Hayes pha...@ihmc.us wrote:

 Not only do I not follow your reasoning, I don't even know what it is you are 
 saying. The document is a valid *representation* of the car, yes of course.

That's all that's necessary to square this circle.

 But as valid as the car itself? So you think a car is a representation of 
 itself? Or are you drawing a contrast between the 'named car resource' and 
 the car itself? ???

All HTTP delivers is representations of named resources. (I very much
do think a car is a representation of itself in HTTP terms, in the
same way a document is, but it isn't necessary here).

 Maybe it would be best if we just dropped this now. I gather that you were 
 offering me a way to make semantic sense of something, but Im not getting any 
 sense at all out of this discussion, I am afraid.

I'll be delighted to drop it, I thought we were getting stuck in a tar
pit but your statement above is the er, oil, that gets us out.

Cheers,
Danny.


-- 
http://danny.ayers.name



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-18 Thread Danny Ayers
On 17 June 2011 02:46, David Booth da...@dbooth.org wrote:

 I agree with TimBL that it is *good* to distinguish between web pages
 and dogs -- and we should encourage folks to do so -- because doing so
 *does* help applications that need this distinction.  But the failure to
 make this distinction does *not* break the web architecture any more
 than a failure to distinguish between male dogs and female dogs.

Thanks David, a nice summary of the most important point IMHO.

Ok, I've been trying to rationalize the case where there is a failure
to make the distinction, but that's very much secondary to the fact
that nothing really gets broken.

Cheers,
Danny.

http://danny.ayers.name



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-18 Thread Pat Hayes
Really (sorry to keep raining on the parade, but) it is not as simple as this. 
Look, it is indeed easy to not bother distinguishing male from female dogs. One 
simply talks of dogs without mentioning gender, and there is a lot that can be 
said about dogs without getting into that second topic. But confusing web 
pages, or documents more generally, with the things the documents are about, 
now that does matter a lot more, simply because it is virtually impossible to 
say *anything* about documents-or-things without immediately being clear which 
of them - documents or things - one is talking about. And there is a good 
reason why this particular confusion is so destructive. Unlike the 
dogs-vs-bitches case, the difference between the document and its topic, the 
thing, is that one is ABOUT the other. This is not simply a matter of ignoring 
some potentially relevant information (the gender of the dog) because one is 
temporarily not concerned with it: it is two different ways of using the very 
names that are the fabric of the descriptive representations themselves. It 
confuses language with language use, confuses language with meta-language. It 
is like saying giraffe has seven letters rather than giraffe has seven 
letters. Maybe this does not break Web architecture, but it certainly breaks 
**semantic** architecture. It completely destroys any semantic coherence we 
might, in some perhaps impossibly optimistic vision of the future, manage to 
create within the semantic web. So yes indeed, the Web will go on happily 
confusing things with documents, partly because the Web really has no actual 
contact with things at all: it is entirely constructed from documents (in a 
wide sense). But the SEMANTIC Web will wither and die, or perhaps be 
still-born, if it cannot find some way to keep use and mention separate and 
coherent. So far, http-range-14 is the only viable suggestion I have seen for 
how to do this. If anyone has a better one, let us discuss it. But just blandly 
assuming that it will all come out in the wash is a bad idea. It won't. 

Pat

On Jun 18, 2011, at 1:51 PM, Danny Ayers wrote:

 On 17 June 2011 02:46, David Booth da...@dbooth.org wrote:
 
 I agree with TimBL that it is *good* to distinguish between web pages
 and dogs -- and we should encourage folks to do so -- because doing so
 *does* help applications that need this distinction.  But the failure to
 make this distinction does *not* break the web architecture any more
 than a failure to distinguish between male dogs and female dogs.
 
 Thanks David, a nice summary of the most important point IMHO.
 
 Ok, I've been trying to rationalize the case where there is a failure
 to make the distinction, but that's very much secondary to the fact
 that nothing really gets broken.
 
 Cheers,
 Danny.
 
 http://danny.ayers.name
 
 


IHMC (850)434 8903 or (650)494 3973   
40 South Alcaniz St.   (850)202 4416   office
Pensacola(850)202 4440   fax
FL 32502  (850)291 0667   mobile
phayesAT-SIGNihmc.us   http://www.ihmc.us/users/phayes








Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-17 Thread Christopher Gutteridge



On 17/06/11 01:46, David Booth wrote:

I agree with TimBL that it is *good* to distinguish between web pages
and dogs -- and we should encourage folks to do so -- because doing so
*does* help applications that need this distinction.  But the failure to
make this distinction does *not* break the web architecture any more
than a failure to distinguish between male dogs and female dogs.
We've been encouraging people to do so. Most do not have the time to 
invest in complexity that they percieve no benefit from adding.


We need to reward people for good semantics by making sure there's tools 
and apps which add value for their business and activities.


--
Christopher Gutteridge -- http://id.ecs.soton.ac.uk/person/1248

/ Lead Developer, EPrints Project, http://eprints.org/
/ Web Projects Manager, ECS, University of Southampton, 
http://www.ecs.soton.ac.uk/
/ Webmaster, Web Science Trust, http://www.webscience.org/




Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Dave Reynolds
On Thu, 2011-06-16 at 21:22 -0400, Tim Berners-Lee wrote:

 On 2011-06 -16, at 16:41, Ian Davis wrote:

  The problem here is that there are so few things that people want to
  say about web pages compared with the multitude of things they want to
  say about every other type of thing in existence.
 
 Well, that is a wonderful new thing.  For a long while it was difficult to
 put data on the web, while there is quite a lot of metadata.
 Wonderful idea that the semantic web may be beating the document
 web hands down but that's not totally clear that we should trash the
 use of URIs for use to refer to documents as do in the document web.

I'm sure Ian wasn't claiming the data web is beating the document web
and equally sure that you don't really think he was :)

FWIW my experience is also that most of the data that people want to
publish *in RDF* is about things rather than web pages. Clearly there
*are* good use cases for capturing web page metadata in RDF but I've not
seen that many in-the-wild cases where people wanted to publish data
about *both* the web page and the thing.

That's why Ian's Back to Basics suggestion works for me [as a fall
back from just use #]. My interpretation is that, unlike most of this
thread, it wasn't saying use URIs ambiguously but saying the
interpretation of the URI is up to the publisher and is discovered from
the data not from the protocol response, it is legitimate to use a
http-no-# URI to denote a thing if that is what you really want to do.

Thus if I want to publish a table of e.g. population statistics at
http://foobar.gov.uk/datasets/population then I can do so and use that
URI within the RDF data as denoting the data set. As publisher I'm
saying this is a qb:DataSet not a web page, anything that looks like a
web page when you point a browser at it is just a rendering related to
that data and that rendering isn't being given a separate URI so you can
talk about it, sorry about that.

 If you use HTTP 200 for something different, then 
 you break my ability to look at a page, review it, and then
 express my review in RDF,  using the page's URI as the identifier.

Not quite. It is saying that you can't give a review for my
http://foobar.gov.uk/datasets/population web page because the RDF
returned by the URI says it denotes a dataset not the web page. You can
still review the dataset itself. You can review other web pages which
don't return RDF data saying they are something other than a web page.

[As an aside, I would claim that most reviews are in fact about things -
restaurants, books, music - not about the web pages.]

Dave





Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-17 Thread Kingsley Idehen

On 6/17/11 1:46 AM, David Booth wrote:

I agree with TimBL that it is*good*  to distinguish between web pages
and dogs -- and we should encourage folks to do so -- because doing so
*does*  help applications that need this distinction.  But the failure to
make this distinction does*not*  break the web architecture any more
than a failure to distinguish between male dogs and female dogs.


Instead of *break* what about compromising or undermining flexibility 
implicit in AWWW? This is tantamount to obscuring the WWW potential 
relative to its broad user constituency.


Re. schema.org, I don't regard their effort as breaking, compromising, 
or undermining AWWW. I simply believe they are taking baby steps that 
are 100% defined by their current business models. Rightly or wrongly 
so, they have to protect their business models. In a sense, the same 
applies to academia and its model where grant funding is vital to 
research projects.


What is dangerous though, is encouraging people to misuse and 
misunderstand AWWW. Names and Addresses are distinct items. AWWW essence 
depends on preserving this vital distinction.


When there are more applications (+1 to Henry's comment about focusing 
on Linked Data apps and viral patterns) this lower level matter will 
vapourize.


Although not present (I am too young) I am certain similar arguments 
arose during the early days of silicon based computing between OS 
developers and programming language developers. I certainly know these 
conversations did arise when Spreadsheets vendors tackled Cell Reference 
functionality.


There are many useful cases in plain sight that many overlook re. power 
of URIs as data conductors, integrators, and access mechanisms. I think 
(based on my experience with this community and industry at large) that 
there is too much focus on reinventing too many parts of the consumption 
stack, from scratch. The key is to be useful but introduce 
usefulness unobtrusively if you really seek uptake. Naturally, this 
requires understanding of what already exists (i.e., domain and subject 
matter knowledge) and functionality areas addressed by existing 
solutions. Sorry, but if all you do is program, you cannot really 
understand the reality of end-users.


I like to make reference to Apple as a great anecdote because they've 
risen from near demise to the vanguard of modern computing by exploiting 
the InterWeb from the inside out, they don't see the Web as simply being 
about HTML. They understand that its a linked information space and 
future data space. They utilize this insight internally in a manner that 
just manifests as being useful to its ever growing customer base.


Remember, there's a lot of old NeXTStep still underlying what Apple 
does. Also remember, the WWW was built on an NeXT machine with a lot of 
inspiration from how its innards worked. Believe it or not, we are still 
playing catch up (circa. 20011)  with NeXTStep and Unix in general re. 
really smart and useful Linked Data apps :-)


Embrace history and the future gets clearer and much more exciting. We 
have an unbelievable opportunity within grasp. We can embrace and extend 
(in a good way) what we may perceive as imperfections by others (e.g. 
schema.org). As Pat stated in an earlier post, these imperfections 
present opportunities that might even span decades before the behemoths 
out there hit their respective opportunity cost thresholds. Once said 
thresholds are hit they will respond accordingly via product fixes 
and/or enterprise acquisitions etc..


Contrary to popular belief, I will state once again that HTTP 303 is the 
poster child for ingenuity inherent in the HTTP protocol and the AWWW.  
Yes, we could also up the semantic smarts on clients and let a retrieved 
resource disambiguate Names and Addresses, but that only adds a burden 
to a target audience that's already challenged re:


1. recognizing linked data structures via directed graphs
2. recognizing that linked data structures have always been about links 
and that HTTP URIs are a powerful vehicle for expanding this concept to 
InterWeb scales
3. recognizing that de-reference (indirection) and address-of operations 
are achievable via URIs and cost-effectively so via HTTP URIs due to WWW 
ubiquity
4. understanding that RDF is *an option* for linked data structures at 
InterWeb scales, you can use other syntaxes without losing access to 
really useful stuff like RDFS and OWL semantics (which also suffers from 
over emphasis on RDF at expense of core syntax agnostic concepts).



Links:

1. http://en.wikipedia.org/wiki/Spreadsheet#Cells
2. http://en.wikipedia.org/wiki/Spreadsheet#Named_cells .

--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen







Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Kingsley Idehen

On 6/17/11 12:35 PM, Dave Reynolds wrote:

  If you use HTTP 200 for something different, then
  you break my ability to look at a page, review it, and then
  express my review in RDF,  using the page's URI as the identifier.

Not quite. It is saying that you can't give a review for my
http://foobar.gov.uk/datasets/population  web page because the RDF
returned by the URI says it denotes a dataset not the web page. You can
still review the dataset itself. You can review other web pages which
don't return RDF data saying they are something other than a web page.


Let's look at this from a slight different angle. What does HTTP 200 OK 
mean? I believe it's how a server indicates to a client that an Address 
(it created) is functional .



I believe Tim is saying: HTTP 200 OK is integral to the Web in a general 
sense. This is behavior backed into AWWW that underlies the ubiquitous 
WWW albeit the information space dimension re., Linked Documents. An 
HTML resource is still a resource, and 200 OK doesn't care about the 
resource type.


As I stated in an earlier post, handling indirection on the server (this 
is basically what we did in our very first Linked Data server 
implementation, pre. Banff 2007) puts a burden on the clients i.e., it 
really sets an expectation that the client is willing and capable of 
doing Name and Address disambiguation by analyzing the data returned. 
Now, if an application commits 100% to self-describing data expressed in 
graph form, serialized in a variety of representations, that would work, 
but in reality this is actually worse than what we are grappling with 
right now re. paths of least resistance en route to broadening and 
accelerating Linked Data uptake. Thus, like all things, its at best just 
another option with some consequences that could ultimately compromise 
the big picture goal.



--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Ian Davis
On Fri, Jun 17, 2011 at 12:35 PM, Dave Reynolds
dave.e.reyno...@gmail.com wrote:
 On Thu, 2011-06-16 at 21:22 -0400, Tim Berners-Lee wrote:

 On 2011-06 -16, at 16:41, Ian Davis wrote:

  The problem here is that there are so few things that people want to
  say about web pages compared with the multitude of things they want to
  say about every other type of thing in existence.

 Well, that is a wonderful new thing.  For a long while it was difficult to
 put data on the web, while there is quite a lot of metadata.
 Wonderful idea that the semantic web may be beating the document
 web hands down but that's not totally clear that we should trash the
 use of URIs for use to refer to documents as do in the document web.

 I'm sure Ian wasn't claiming the data web is beating the document web
 and equally sure that you don't really think he was :)

Yes, absolutely.


 FWIW my experience is also that most of the data that people want to
 publish *in RDF* is about things rather than web pages. Clearly there
 *are* good use cases for capturing web page metadata in RDF but I've not
 seen that many in-the-wild cases where people wanted to publish data
 about *both* the web page and the thing.

 That's why Ian's Back to Basics suggestion works for me [as a fall
 back from just use #]. My interpretation is that, unlike most of this
 thread, it wasn't saying use URIs ambiguously but saying the
 interpretation of the URI is up to the publisher and is discovered from
 the data not from the protocol response, it is legitimate to use a
 http-no-# URI to denote a thing if that is what you really want to do.


Yes, that's exactly what I am saying.


 Thus if I want to publish a table of e.g. population statistics at
 http://foobar.gov.uk/datasets/population then I can do so and use that
 URI within the RDF data as denoting the data set. As publisher I'm
 saying this is a qb:DataSet not a web page, anything that looks like a
 web page when you point a browser at it is just a rendering related to
 that data and that rendering isn't being given a separate URI so you can
 talk about it, sorry about that.

 If you use HTTP 200 for something different, then
 you break my ability to look at a page, review it, and then
 express my review in RDF,  using the page's URI as the identifier.

 Not quite. It is saying that you can't give a review for my
 http://foobar.gov.uk/datasets/population web page because the RDF
 returned by the URI says it denotes a dataset not the web page. You can
 still review the dataset itself. You can review other web pages which
 don't return RDF data saying they are something other than a web page.

 [As an aside, I would claim that most reviews are in fact about things -
 restaurants, books, music - not about the web pages.]


Quite. When a facebook user clicks the Like button on an IMDB page
they are expressing an opinion about the movie, not the page.

Ian



Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Tim Berners-Lee

On 2011-06 -17, at 08:51, Ian Davis wrote:

 If you use HTTP 200 for something different, then
 you break my ability to look at a page, review it, and then
 express my review in RDF,  using the page's URI as the identifier.
 
 Not quite. It is saying that you can't give a review for my
 http://foobar.gov.uk/datasets/population web page because the RDF
 returned by the URI says it denotes a dataset not the web page. You can
 still review the dataset itself. You can review other web pages which
 don't return RDF data saying they are something other than a web page.
 
 [As an aside, I would claim that most reviews are in fact about things -
 restaurants, books, music - not about the web pages.]
 
 
 Quite. When a facebook user clicks the Like button on an IMDB page
 they are expressing an opinion about the movie, not the page.

BUT when the click a Like button on a blog they are expressing they like the
blog, not the movie it is about.

AND when they click like on a facebook comment they are
saying they like the comment not the thing it is commenting on.

And on Amazon people say I found this review useful to 
like the review on the product being reviewed, separately from
rating the product.
So there is a lot of use out there which involves people expressing 
stuff in general about the message not its subject.

I am really not sure that I want to give up the ability in my browser
to bookmark a page about something -- the IMDB page a
about a movie, rather than the movie itself.

When the cost os just fixing Microdata syntax to make it easy to 
say things about the subject of a page.

Tim




Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Ian Davis
On Fri, Jun 17, 2011 at 2:04 PM, Tim Berners-Lee ti...@w3.org wrote:

 On 2011-06 -17, at 08:51, Ian Davis wrote:

 If you use HTTP 200 for something different, then
 you break my ability to look at a page, review it, and then
 express my review in RDF,  using the page's URI as the identifier.

 Not quite. It is saying that you can't give a review for my
 http://foobar.gov.uk/datasets/population web page because the RDF
 returned by the URI says it denotes a dataset not the web page. You can
 still review the dataset itself. You can review other web pages which
 don't return RDF data saying they are something other than a web page.

 [As an aside, I would claim that most reviews are in fact about things -
 restaurants, books, music - not about the web pages.]


 Quite. When a facebook user clicks the Like button on an IMDB page
 they are expressing an opinion about the movie, not the page.

 BUT when the click a Like button on a blog they are expressing they like the
 blog, not the movie it is about.

 AND when they click like on a facebook comment they are
 saying they like the comment not the thing it is commenting on.

 And on Amazon people say I found this review useful to
 like the review on the product being reviewed, separately from
 rating the product.
 So there is a lot of use out there which involves people expressing
 stuff in general about the message not its subject.

Sure. All these use cases stand and can co-exist. I can look at the
data in any of those responses, or data I glean from elsewhere, to
figure out if the URI I'm accessing refers to the content I received
or the subject of that content. That model works for any protocol BTW.


 I am really not sure that I want to give up the ability in my browser
 to bookmark a page about something -- the IMDB page a
 about a movie, rather than the movie itself.


OK, we differ here then. I would prefer to bookmark the movie because
that's what I'm interested in. The page will change over the years but
the movie will still persist. Today you have no choice because your
conceptual model does not give a URI to the movie and doesn't see the
need to generate 2 URIs.


 When the cost os just fixing Microdata syntax to make it easy to
 say things about the subject of a page.

i don't think this has anything to do with microdata.

Ian



Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Henry Story

On 17 Jun 2011, at 15:04, Tim Berners-Lee wrote:

 AND when they click like on a facebook comment they are
 saying they like the comment not the thing it is commenting on.

Indeed I have had a few people on Facebook comment that they were very unhappy 
not being able to distinguish between what the object of a like is. Such as 
when one likes a page about the death of a friend, or about some child 
tortured in some distant county.

Of course FB was right to start with such a simple relation. Just as the web 
started with the a href=../a link. One starts with the simplest relations 
that make no clear distinction between what is liked and then following the 
pressure from the community, and business opportunities, one adds distinctions 
in the order of which is the most profitable to add next. I am sure Facebook is 
very greatful to academia for having shown that it will find it no trouble to 
move to liking objects and  being able to distinguish those from web pages. But 
their job is to build tools that generate huge markets in order to build 
profit, so they will only increase the subtlety of their distinctions as their 
business cases require them.

We can build ontologies that follow a similar path, starting from ontologies 
that don't require someone to distinguish between pages and things named by 
them. It will be interesting to work out how far one can go with that and at 
what point it breaks down conceptually. So with the like button, it does not 
allow one to distinguish the liking of an article or the death of a friend. But 
the procedural value of like - easy notification system - was big enough to 
build out a huge market - within the conceptual limitations of the relation.

In any case it does not seem that this has anything to do with architectural 
limitations of the Web, since it is easy I think even in RDF to do both.


Henry

Social Web Architect
http://bblfish.net/




Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Ian Davis
On Fri, Jun 17, 2011 at 2:04 PM, Tim Berners-Lee ti...@w3.org wrote:
 Not quite. It is saying that you can't give a review for my
 http://foobar.gov.uk/datasets/population web page because the RDF
 returned by the URI says it denotes a dataset not the web page. You can
 still review the dataset itself. You can review other web pages which
 don't return RDF data saying they are something other than a web page.

 [As an aside, I would claim that most reviews are in fact about things -
 restaurants, books, music - not about the web pages.]


 Quite. When a facebook user clicks the Like button on an IMDB page
 they are expressing an opinion about the movie, not the page.

 BUT when the click a Like button on a blog they are expressing they like the
 blog, not the movie it is about.

 AND when they click like on a facebook comment they are
 saying they like the comment not the thing it is commenting on.

 And on Amazon people say I found this review useful to
 like the review on the product being reviewed, separately from
 rating the product.
 So there is a lot of use out there which involves people expressing
 stuff in general about the message not its subject.

As an additional point, a review _is_ a seperate thing, it's not a web
page. It is often contained within a webpage. It seems you are
conflating the two here. Reviews and comments can be and often are
syndicated across multiple sites so clearly any liking of the review
needs to flow with it.

Ian



Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Leigh Dodds
Hi,

On 17 June 2011 14:04, Tim Berners-Lee ti...@w3.org wrote:

 On 2011-06 -17, at 08:51, Ian Davis wrote:
 ...

 Quite. When a facebook user clicks the Like button on an IMDB page
 they are expressing an opinion about the movie, not the page.

 BUT when the click a Like button on a blog they are expressing they like the
 blog, not the movie it is about.

 AND when they click like on a facebook comment they are
 saying they like the comment not the thing it is commenting on.

 And on Amazon people say I found this review useful to
 like the review on the product being reviewed, separately from
 rating the product.
 So there is a lot of use out there which involves people expressing
 stuff in general about the message not its subject.

Well even that's debatable.

I just had to go and check whether Amazon reviews and Facebook
comments actually do have their own pages. That's because I've never
seen them presented as anything other than objects within another
container, either in a web page or a mobile app. So I think you could
argue that when people are linking and marking things as useful,
they're doing that on a more general abstraction, i.e. the Work (to
borrow FRBR terminology) not the particular web page.

And that's presumably the way that Facebook and Amazon see it too
because that data is associated with the status or review in whichever
medium I look at it (page or app).

Cheers,

L.

-- 
Leigh Dodds
Programme Manager, Talis Platform
Mobile: 07850 928381
http://kasabi.com
http://talis.com

Talis Systems Ltd
43 Temple Row
Birmingham
B2 5LS



Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Kingsley Idehen

On 6/17/11 2:18 PM, Ian Davis wrote:

I am really not sure that I want to give up the ability in my browser
  to bookmark a page about something -- the IMDB page a
  about a movie, rather than the movie itself.


OK, we differ here then. I would prefer to bookmark the movie because
that's what I'm interested in.


Yes, and you have that right as an individual using the Web. Same 
applies to those that want to bookmark a Page about the Movie. Thus, the 
eternal challenge remains: how does a system inherently cater for 
natural variations inherent in individuals. This is where AWWW scores 
big time re. Web as a Global Space for Information and Data :-)



  The page will change over the years but
the movie will still persist.


Yes, and I may be interested in understanding the evolution of the page 
over the years. The Page is as valid a Data Object as its Subject 
Matter. This is the crux of the matter. The system has to handle our 
individuality, as per earlier comment.



Today you have no choice because your
conceptual model does not give a URI to the movie and doesn't see the
need to generate 2 URIs.


Today, we don't have the options in question because a majority of Web 
users are still only utilizing its Information Space dimension.








--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Bob Ferris

Hi,

On 6/17/2011 4:11 PM, Leigh Dodds wrote:

Hi,

On 17 June 2011 14:04, Tim Berners-Leeti...@w3.org  wrote:


On 2011-06 -17, at 08:51, Ian Davis wrote:

...

Quite. When a facebook user clicks the Like button on an IMDB page
they are expressing an opinion about the movie, not the page.


BUT when the click a Like button on a blog they are expressing they like the
blog, not the movie it is about.

AND when they click like on a facebook comment they are
saying they like the comment not the thing it is commenting on.

And on Amazon people say I found this review useful to
like the review on the product being reviewed, separately from
rating the product.
So there is a lot of use out there which involves people expressing
stuff in general about the message not its subject.


Well even that's debatable.

I just had to go and check whether Amazon reviews and Facebook
comments actually do have their own pages. That's because I've never
seen them presented as anything other than objects within another
container, either in a web page or a mobile app. So I think you could
argue that when people are linking and marking things as useful,
they're doing that on a more general abstraction, i.e. the Work (to
borrow FRBR terminology) not the particular web page.


Well, that is obviously the level where the (abstract) information 
resource is located (can be located), or? ;)


Cheers,


Bob


PS: cf., e.g., 
http://odontomachus.wordpress.com/2011/02/13/frbr-and-the-web/ ;)




Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Kingsley Idehen

On 6/17/11 2:55 PM, Ian Davis wrote:

BUT when the click a Like button on a blog they are expressing they like the
  blog, not the movie it is about.

  AND when they click like on a facebook comment they are
  saying they like the comment not the thing it is commenting on.

  And on Amazon people say I found this review useful to
  like the review on the product being reviewed, separately from
  rating the product.
  So there is a lot of use out there which involves people expressing
  stuff in general about the message not its subject.

As an additional point, a review_is_  a seperate thing, it's not a web
page. It is often contained within a webpage. It seems you are
conflating the two here. Reviews and comments can be and often are
syndicated across multiple sites so clearly any liking of the review
needs to flow with it.


Yes, it is a separate thing representable as a Data Object. Now the 
obvious question: what is a Web Page? Isn't that a sourced from Data at 
an Address that's streamed to a client that uses a specific data 
presentation metaphor as basis for user comprehension?


Are the following identical or different, re. URI functionality ?

1. http://dbpedia.org/resource/Linked_Data
2. http://dbpedia.org/page/Linked_Data
3. http://dbpedia.org/data/Linked_Data.json .

I may want to bookmark: http://dbpedia.org/page/Linked_Data, I may also 
be interested in its evolution over time via services lime memento [1] .


The thing is that re. WWW we have an Information Space dimension and 
associated patterns that's preceded the Data Space dimension and 
emerging patterns that we (this community) are collectively trying to 
crystallize, in an unobtrusive manner.


Links:

1. http://www.mementoweb.org/guide/quick-intro/

--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Kingsley Idehen

On 6/17/11 3:11 PM, Leigh Dodds wrote:

I just had to go and check whether Amazon reviews and Facebook
comments actually do have their own pages. That's because I've never
seen them presented as anything other than objects within another
container, either in a web page or a mobile app. So I think you could
argue that when people are linking and marking things as useful,
they're doing that on a more general abstraction, i.e. the Work (to
borrow FRBR terminology) not the particular web page.


You have to apply context to your statement above. Is the context: WWW 
as an Information space or Data Space? These contexts can co-exist, but 
we need to allow users context-switch, unobtrusively. Thus,  they have 
to co-exist, and that's why we have to leverage what the full URI 
abstraction delivers. As stated earlier, it doesn't mean others will 
follow or understand immediately, you need more than architecture for 
that;  hence the need for a broad spectrum of solutions that do things 
properly.


--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Ian Davis
Small typo changed the meaning of what I was saying:

On Fri, Jun 17, 2011 at 2:18 PM, Ian Davis li...@iandavis.com wrote:
 OK, we differ here then. I would prefer to bookmark the movie because
 that's what I'm interested in. The page will change over the years but
 the movie will still persist. Today you have no choice because your
 conceptual model does not give a URI to the movie and doesn't see the
 need to generate 2 URIs.

But I meant to write:

Today you have no choice because your conceptual model does not give a
URI to the movie and [the publisher] doesn't see the need to generate
2 URIs.

Of course I recognise your conceptual model sees the need for multiple
URIs... :)

Ian



Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread David Wood
Hi all,

This thread seems to me to be classic neat vs. scruffy argument [1].  I used 
to be a neat, when I was young, foolish and of course selfish.  Now that I am 
old enough to see others' points of view, I have become scruffy.  Either that, 
or I'm just tired of trying to force others to do things my way.

The Web is a scruffy place and that is a feature, not a bug.

Regards,
Dave

[1] http://en.wikipedia.org/wiki/Neats_vs._scruffies


On Jun 17, 2011, at 10:27, Kingsley Idehen wrote:

 On 6/17/11 2:55 PM, Ian Davis wrote:
 BUT when the click a Like button on a blog they are expressing they like 
 the
   blog, not the movie it is about.
 
   AND when they click like on a facebook comment they are
   saying they like the comment not the thing it is commenting on.
 
   And on Amazon people say I found this review useful to
   like the review on the product being reviewed, separately from
   rating the product.
   So there is a lot of use out there which involves people expressing
   stuff in general about the message not its subject.
 As an additional point, a review_is_  a seperate thing, it's not a web
 page. It is often contained within a webpage. It seems you are
 conflating the two here. Reviews and comments can be and often are
 syndicated across multiple sites so clearly any liking of the review
 needs to flow with it.
 
 Yes, it is a separate thing representable as a Data Object. Now the obvious 
 question: what is a Web Page? Isn't that a sourced from Data at an Address 
 that's streamed to a client that uses a specific data presentation metaphor 
 as basis for user comprehension?
 
 Are the following identical or different, re. URI functionality ?
 
 1. http://dbpedia.org/resource/Linked_Data
 2. http://dbpedia.org/page/Linked_Data
 3. http://dbpedia.org/data/Linked_Data.json .
 
 I may want to bookmark: http://dbpedia.org/page/Linked_Data, I may also be 
 interested in its evolution over time via services lime memento [1] .
 
 The thing is that re. WWW we have an Information Space dimension and 
 associated patterns that's preceded the Data Space dimension and emerging 
 patterns that we (this community) are collectively trying to crystallize, in 
 an unobtrusive manner.
 
 Links:
 
 1. http://www.mementoweb.org/guide/quick-intro/
 
 -- 
 
 Regards,
 
 Kingsley Idehen   
 President  CEO
 OpenLink Software
 Web: http://www.openlinksw.com
 Weblog: http://www.openlinksw.com/blog/~kidehen
 Twitter/Identi.ca: kidehen
 
 
 
 
 
 




Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Kingsley Idehen

On 6/17/11 3:27 PM, Kingsley Idehen wrote:


Yes, it is a separate thing representable as a Data Object. Now the 
obvious question: what is a Web Page? Isn't that a sourced from Data 
at an Address that's streamed to a client that uses a specific data 
presentation metaphor as basis for user comprehension?


Are the following identical or different, re. URI functionality ?

1. http://dbpedia.org/resource/Linked_Data
2. http://dbpedia.org/page/Linked_Data
3. http://dbpedia.org/data/Linked_Data.json .

I may want to bookmark: http://dbpedia.org/page/Linked_Data, I may 
also be interested in its evolution over time via services lime 
memento [1] .


The thing is that re. WWW we have an Information Space dimension and 
associated patterns that's preceded the Data Space dimension and 
emerging patterns that we (this community) are collectively trying to 
crystallize, in an unobtrusive manner.


Links:

1. http://www.mementoweb.org/guide/quick-intro/ 


Meant to say:

**
Yes, it is a separate thing representable as a Data Object. Now the 
obvious question: what is a Web Page? Isn't that Data streamed from an 
Address (provided by a server) to a client that uses a specific data 
presentation metaphor as basis for user comprehension?

***


Are the following identical or different, re. URI functionality ?

1. http://dbpedia.org/resource/Linked_Data
2. http://dbpedia.org/page/Linked_Data
3. http://dbpedia.org/data/Linked_Data.json .

I may want to bookmark: http://dbpedia.org/page/Linked_Data, I may also 
be interested in its evolution over time via services lime memento [1] .


The thing is that re. WWW we have an Information Space dimension and 
associated patterns that's preceded the Data Space dimension and 
emerging patterns that we (this community) are collectively trying to 
crystallize, in an unobtrusive manner.


Links:

1. http://www.mementoweb.org/guide/quick-intro/


--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Leigh Dodds
Hi,

On 17 June 2011 15:32, Kingsley Idehen kide...@openlinksw.com wrote:
 On 6/17/11 3:11 PM, Leigh Dodds wrote:

 I just had to go and check whether Amazon reviews and Facebook
 comments actually do have their own pages. That's because I've never
 seen them presented as anything other than objects within another
 container, either in a web page or a mobile app. So I think you could
 argue that when people are linking and marking things as useful,
 they're doing that on a more general abstraction, i.e. the Work (to
 borrow FRBR terminology) not the particular web page.

 You have to apply context to your statement above. Is the context: WWW as an
 Information space or Data Space?

I can't answer that because I don't know what you mean by those terms.
It's just a web of resources as far as I'm concerned.

Cheers,

L.

-- 
Leigh Dodds
Programme Manager, Talis Platform
Mobile: 07850 928381
http://kasabi.com
http://talis.com

Talis Systems Ltd
43 Temple Row
Birmingham
B2 5LS



Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Kingsley Idehen

On 6/17/11 3:36 PM, David Wood wrote:

Hi all,

This thread seems to me to be classic neat vs. scruffy argument [1].  I used 
to be a neat, when I was young, foolish and of course selfish.  Now that I am old enough 
to see others' points of view, I have become scruffy.  Either that, or I'm just tired of 
trying to force others to do things my way.

The Web is a scruffy place and that is a feature, not a bug.


May I say: it accommodates scruffiness because of its architecture :-)

 Kingsley

Regards,
Dave

[1] http://en.wikipedia.org/wiki/Neats_vs._scruffies


On Jun 17, 2011, at 10:27, Kingsley Idehen wrote:


On 6/17/11 2:55 PM, Ian Davis wrote:

BUT when the click a Like button on a blog they are expressing they like the

  blog, not the movie it is about.

  AND when they click like on a facebook comment they are
  saying they like the comment not the thing it is commenting on.

  And on Amazon people say I found this review useful to
  like the review on the product being reviewed, separately from
  rating the product.
  So there is a lot of use out there which involves people expressing
  stuff in general about the message not its subject.

As an additional point, a review_is_  a seperate thing, it's not a web
page. It is often contained within a webpage. It seems you are
conflating the two here. Reviews and comments can be and often are
syndicated across multiple sites so clearly any liking of the review
needs to flow with it.

Yes, it is a separate thing representable as a Data Object. Now the obvious 
question: what is a Web Page? Isn't that a sourced from Data at an Address 
that's streamed to a client that uses a specific data presentation metaphor as 
basis for user comprehension?

Are the following identical or different, re. URI functionality ?

1. http://dbpedia.org/resource/Linked_Data
2. http://dbpedia.org/page/Linked_Data
3. http://dbpedia.org/data/Linked_Data.json .

I may want to bookmark: http://dbpedia.org/page/Linked_Data, I may also be 
interested in its evolution over time via services lime memento [1] .

The thing is that re. WWW we have an Information Space dimension and associated 
patterns that's preceded the Data Space dimension and emerging patterns that we 
(this community) are collectively trying to crystallize, in an unobtrusive 
manner.

Links:

1. http://www.mementoweb.org/guide/quick-intro/

--

Regards,

Kingsley Idehen 
President   CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen












--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Kingsley Idehen

On 6/17/11 3:44 PM, Leigh Dodds wrote:

Hi,

On 17 June 2011 15:32, Kingsley Idehenkide...@openlinksw.com  wrote:

On 6/17/11 3:11 PM, Leigh Dodds wrote:

I just had to go and check whether Amazon reviews and Facebook
comments actually do have their own pages. That's because I've never
seen them presented as anything other than objects within another
container, either in a web page or a mobile app. So I think you could
argue that when people are linking and marking things as useful,
they're doing that on a more general abstraction, i.e. the Work (to
borrow FRBR terminology) not the particular web page.

You have to apply context to your statement above. Is the context: WWW as an
Information space or Data Space?

I can't answer that because I don't know what you mean by those terms.
It's just a web of resources as far as I'm concerned.

Cheers,

L.



Links that will help you with terminology.

1. http://linkeddatabook.com/editions/1.0/ -- Web as Global Data Space
2. http://www.xent.com/FoRK-archive/dec00/0608.html -- Web as 
Information Space (courtesy of quick Google search).



--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Pat Hayes

On Jun 17, 2011, at 6:35 AM, Dave Reynolds wrote:

 
 [As an aside, I would claim that most reviews are in fact about things -
 restaurants, books, music - not about the web pages.]

Or about the weather in Oacala, for example.

Pat

 
 Dave
 
 
 
 


IHMC (850)434 8903 or (650)494 3973   
40 South Alcaniz St.   (850)202 4416   office
Pensacola(850)202 4440   fax
FL 32502  (850)291 0667   mobile
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Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Alan Ruttenberg
On Fri, Jun 17, 2011 at 11:22 AM, Pat Hayes pha...@ihmc.us wrote:


 On Jun 17, 2011, at 6:35 AM, Dave Reynolds wrote:

 
  [As an aside, I would claim that most reviews are in fact about things -
  restaurants, books, music - not about the web pages.]

 Or about the weather in Oacala, for example.

 Pat


And is the weather part of the essence of the resource?

-Alan


Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Kingsley Idehen

On 6/17/11 3:52 PM, Kingsley Idehen wrote:

On 6/17/11 3:44 PM, Leigh Dodds wrote:

Hi,

On 17 June 2011 15:32, Kingsley Idehenkide...@openlinksw.com  wrote:

On 6/17/11 3:11 PM, Leigh Dodds wrote:

I just had to go and check whether Amazon reviews and Facebook
comments actually do have their own pages. That's because I've never
seen them presented as anything other than objects within another
container, either in a web page or a mobile app. So I think you could
argue that when people are linking and marking things as useful,
they're doing that on a more general abstraction, i.e. the Work (to
borrow FRBR terminology) not the particular web page.
You have to apply context to your statement above. Is the context: 
WWW as an

Information space or Data Space?

I can't answer that because I don't know what you mean by those terms.
It's just a web of resources as far as I'm concerned.

Cheers,

L.



Links that will help you with terminology.

1. http://linkeddatabook.com/editions/1.0/ -- Web as Global Data Space
2. http://www.xent.com/FoRK-archive/dec00/0608.html -- Web as 
Information Space (courtesy of quick Google search).




Leigh,

In addition to the above, and bearing in mind Harry's contribution to 
this conversation, here is one of his presentations in which slide #2 
makes reference to WWW as an Information Space [1].


Links:

1. http://www.ibiblio.org/hhalpin/homepage/presentations/interface/

--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Nathan

Tim Berners-Lee wrote:
And on Amazon people say I found this review useful to 
like the review on the product being reviewed, separately from

rating the product.
So there is a lot of use out there which involves people expressing 
stuff in general about the message not its subject.


yes, common use case, many sites give karma to comments / reviews and 
have links to them both in and out of context.


When the cost os just fixing Microdata syntax to make it easy to 
say things about the subject of a page.


far from expert on microdata, but @itemid may well cater for this.




Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Nathan

Ian Davis wrote:

As an additional point, a review _is_ a seperate thing, it's not a web
page. It is often contained within a webpage. It seems you are
conflating the two here. Reviews and comments can be and often are
syndicated across multiple sites so clearly any liking of the review
needs to flow with it.


so the like data needs to be webized and exposed easily.

also, realtime updates on / streams of such data would come in very 
useful. permissions and visibility would looked at though, so probably 
authentication via webid or other would be needed too.




Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Nathan

Kingsley Idehen wrote:

On 6/17/11 3:11 PM, Leigh Dodds wrote:

I just had to go and check whether Amazon reviews and Facebook
comments actually do have their own pages. That's because I've never
seen them presented as anything other than objects within another
container, either in a web page or a mobile app. So I think you could
argue that when people are linking and marking things as useful,
they're doing that on a more general abstraction, i.e. the Work (to
borrow FRBR terminology) not the particular web page.


You have to apply context to your statement above. Is the context: WWW 
as an Information space or Data Space? These contexts can co-exist, but 
we need to allow users context-switch, unobtrusively. Thus,  they have 
to co-exist, and that's why we have to leverage what the full URI 
abstraction delivers. As stated earlier, it doesn't mean others will 
follow or understand immediately, you need more than architecture for 
that;  hence the need for a broad spectrum of solutions that do things 
properly.




and UX challenges, indeed if the ux was addressed first for the 
functionality, then whatever was implemented could be webized and 
standardized - could be a good way to force innovation in this area.




Re: Squaring the HTTP-range-14 circle

2011-06-17 Thread Nathan

could also term it constrained vs diverse :)

David Wood wrote:

Hi all,

This thread seems to me to be classic neat vs. scruffy argument [1].  I used 
to be a neat, when I was young, foolish and of course selfish.  Now that I am old enough 
to see others' points of view, I have become scruffy.  Either that, or I'm just tired of 
trying to force others to do things my way.

The Web is a scruffy place and that is a feature, not a bug.

Regards,
Dave

[1] http://en.wikipedia.org/wiki/Neats_vs._scruffies


On Jun 17, 2011, at 10:27, Kingsley Idehen wrote:


On 6/17/11 2:55 PM, Ian Davis wrote:

BUT when the click a Like button on a blog they are expressing they like the

 blog, not the movie it is about.

 AND when they click like on a facebook comment they are
 saying they like the comment not the thing it is commenting on.

 And on Amazon people say I found this review useful to
 like the review on the product being reviewed, separately from
 rating the product.
 So there is a lot of use out there which involves people expressing
 stuff in general about the message not its subject.

As an additional point, a review_is_  a seperate thing, it's not a web
page. It is often contained within a webpage. It seems you are
conflating the two here. Reviews and comments can be and often are
syndicated across multiple sites so clearly any liking of the review
needs to flow with it.

Yes, it is a separate thing representable as a Data Object. Now the obvious 
question: what is a Web Page? Isn't that a sourced from Data at an Address 
that's streamed to a client that uses a specific data presentation metaphor as 
basis for user comprehension?

Are the following identical or different, re. URI functionality ?

1. http://dbpedia.org/resource/Linked_Data
2. http://dbpedia.org/page/Linked_Data
3. http://dbpedia.org/data/Linked_Data.json .

I may want to bookmark: http://dbpedia.org/page/Linked_Data, I may also be 
interested in its evolution over time via services lime memento [1] .

The thing is that re. WWW we have an Information Space dimension and associated 
patterns that's preceded the Data Space dimension and emerging patterns that we 
(this community) are collectively trying to crystallize, in an unobtrusive 
manner.

Links:

1. http://www.mementoweb.org/guide/quick-intro/

--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen
















Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-17 Thread Nathan

Danny Ayers wrote:

On 16 June 2011 02:26, Pat Hayes pha...@ihmc.us wrote:


If you agree with Danny that a description can be a substitute for the thing it 
describes, then I am waiting to hear how one of you will re-write classical 
model theory to accommodate this classical use/mention error. You might want to 
start by reading Korzybski's 'General Semantics'.


IANAL, but I have heard of the use/mention thing, quite often. I don't
honestly know whether classical model theory needs a rewrite, but I'm
sure it doesn't on the basis of this thread. I also don't know enough
to know whether it's applicable - from your reaction, I suspect not.

As a publisher of information on the Web, I'm pretty much free to say
what I like (cf. Tim's Design Notes). Fish are bicycles. But that
isn't very useful.

But if I say Sasha is some kind of weird Collie-German Shepherd cross,
that has direct relevance to Sasha herself. More, the arcs in my
description between Sasha and her parents have direct correspondence
with the arcs between Sasha and her parents. There is information
common to the reality and the description (at least in human terms).
The description may, when you stand back, be very different in its
nature to the reality, but if you wish to make use of the information,
such common aspects are valuable. We've already established that HTTP
doesn't deal with any kind of one true representation. Data about
Sasha's parentage isn't Sasha, but it's closer than a non-committal
303 or rdfs:seeAlso. There's nothing around HTTP that says it can't be
given the same name, and it's a darn sight more useful than a
wave-over-there redirect or a random fish/bike association. I can't
see anything it breaks either.


You could use the same name for both if each name was always coupled to 
a universe, specified by the predicate, and you cut out type information 
from data, such that:


 x-sasha :animalname sasha ; :created 2011 .

was read as:

 Animal(x-sasha) :animalname sasha .
 Document(x-sasha) :created 2011 .

the ability to do this could be pushed on to ontologies, with domain and 
range and restrictions specifying universes and boundaries - but it's a 
big change.


really, different names for different things is quite simple to stick 
to, and considering most (virtually all) documents on the web have 
several different elements and identifiable things, the one page one 
subject thing isn't worth spending too much time focusing on as a 
generic use case, as any solution based on it won't apply to the web at 
large which is very diverse and packed full of lots of potentially 
identifiable things.


best, nathan



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-17 Thread Nathan

Alan Ruttenberg wrote:

Pat's knows something about the history of
what's known to work and what isn't. You ignore that history at the peril of
your ideas simply not working.


well said, although I think we could bracket yourself in that category 
too :)





Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-17 Thread Henry Story

On 17 Jun 2011, at 22:42, Nathan wrote:

 
 You could use the same name for both if each name was always coupled to a 
 universe, specified by the predicate, and you cut out type information from 
 data, such that:
 
 x-sasha :animalname sasha ; :created 2011 .
 
 was read as:
 
 Animal(x-sasha) :animalname sasha .
 Document(x-sasha) :created 2011 .
 
 the ability to do this could be pushed on to ontologies, with domain and 
 range and restrictions specifying universes and boundaries - but it's a big 
 change.

No its quite simple in fact, as I pointed out in a couple of e-mails in this 
thread. You just need to be careful when creating relations that certain 
relations are in fact inferred relations between primary topics.

 really, different names for different things is quite simple to stick to,

yes, but there are a lot of people who say it is too complicated. I don't find 
it so, but perhaps it is for their use cases. I say that we describe the option 
they like, find out what the limitations are they will fall have, and document 
it. Then next time we can refer others to that discovery.

So limitations to look for would be limitations as to the complexity of the 
data created. The other limitations is that even on simple blog pages there are 
at least three or four things on the page.

 and considering most (virtually all) documents on the web have several 
 different elements and identifiable things,

indeed.

 the one page one subject thing isn't worth spending too much time focusing on 
 as a generic use case, as any solution based on it won't apply to the web at 
 large which is very diverse and packed full of lots of potentially 
 identifiable things.

agree. But it is one of those things that newbies feel the urge to do, and will 
keep on wanting to do. So perhaps for them one should have special simple 
ontologies or guides for how to build these ObjectDocument ontologies. In any 
case this seems to be the type of thing the microformats people were (are?) 
doing.

Henry


 
 best, nathan

Social Web Architect
http://bblfish.net/




Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-17 Thread Nathan

Henry Story wrote:

On 17 Jun 2011, at 22:42, Nathan wrote:


You could use the same name for both if each name was always coupled to a 
universe, specified by the predicate, and you cut out type information from 
data, such that:

x-sasha :animalname sasha ; :created 2011 .

was read as:

Animal(x-sasha) :animalname sasha .
Document(x-sasha) :created 2011 .

the ability to do this could be pushed on to ontologies, with domain and range 
and restrictions specifying universes and boundaries - but it's a big change.


No its quite simple in fact, as I pointed out in a couple of e-mails in this 
thread. You just need to be careful when creating relations that certain 
relations are in fact inferred relations between primary topics.


I'd agree, but anything that involves being careful is pretty much 
doomed to failure on the web :p



really, different names for different things is quite simple to stick to,


yes, but there are a lot of people who say it is too complicated. I don't find 
it so, but perhaps it is for their use cases. I say that we describe the option 
they like, find out what the limitations are they will fall have, and document 
it. Then next time we can refer others to that discovery.

So limitations to look for would be limitations as to the complexity of the 
data created. The other limitations is that even on simple blog pages there are 
at least three or four things on the page.


there's also a primary limitation of the programming languages 
developers are using, if they've got locked in stone classes and 
objects, or even just structures, then the dynamics of RDF can be pretty 
hard to both understand mentally, and use practically.



and considering most (virtually all) documents on the web have several 
different elements and identifiable things,


indeed.


the one page one subject thing isn't worth spending too much time focusing on 
as a generic use case, as any solution based on it won't apply to the web at 
large which is very diverse and packed full of lots of potentially identifiable 
things.


agree. But it is one of those things that newbies feel the urge to do, and will 
keep on wanting to do. So perhaps for them one should have special simple 
ontologies or guides for how to build these ObjectDocument ontologies. In any 
case this seems to be the type of thing the microformats people were (are?) 
doing.


hmm.. microformats seems to be pretty focussed on describing multiple 
items on one page, however the singularity is present in that they 
focussed on being described using a single Class Blueprint style, one 
class, a predetermined set of properties belonging to the class, and a 
simple chained heirarchy - this stems from most OO based languages.


With a bit of trickery you can use RDF and OWL the same way, it just 
means you have different views over the data, where you can see 
Human(x) with a set of properties, or Male(x) with another set, or 
Administrator(x) with yet another set. This is less about the data 
published and more about how it's consumed viewed and processed though.


Quite sure something can be done with that, where the simple version of 
the data uses a basic schema.org like ontology, and advanced usage is 
more RDF like using multiple ontologies. The views thing would be a 
way to merge the two approaches..


Best,

Nathan



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-16 Thread Alan Ruttenberg
On Wed, Jun 15, 2011 at 6:24 AM, Richard Cyganiak rich...@cyganiak.dewrote:

 On 15 Jun 2011, at 01:07, Alan Ruttenberg wrote:
  Google won't scrap schema.org because your thought experiment proved
 that it's not “semantically clear.”
 
  Richard, that wasn't the point. You mocked the idea that semantically
  clear could be defined. I responded with an attempt.

 I have no interest in theoretical discussions that are detached from
 application.


I assume you mean you are not interested in discussions of theory that are
detached from application.

In any case this is a non-sequitor. The definition is offered because some,
including myself, think that there are important classes of applications for
which it is an essential ingredient of success (like some of the ones I need
to build), and because you implied that defining what we meant was not
feasible.


  I think that we are beyond the point where that kind of extremely
 idealised account is useful for evaluating web technologies.
 
  We will agree to disagree then. Perhaps in another thread you will say
  what *will* be useful for evaluating web technologies.

 Adoption trends, ergonomics, fit with the existing technology ecosystem,
 existence of migration paths, marketability, potential of network effects.


Does what the technology *accomplishes* fit in there somewhere? Looking at
the above, one might conclude that a successful Ponzi scheme of some sort
would score well.

Regards,
Alan


Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-16 Thread Richard Cyganiak
On 16 Jun 2011, at 07:05, Alan Ruttenberg wrote:
  I think that we are beyond the point where that kind of extremely 
  idealised account is useful for evaluating web technologies.
 
  We will agree to disagree then. Perhaps in another thread you will say
  what *will* be useful for evaluating web technologies.
 
 Adoption trends, ergonomics, fit with the existing technology ecosystem, 
 existence of migration paths, marketability, potential of network effects.
 
 
 Does what the technology *accomplishes* fit in there somewhere?

Web technologies are never about accomplishing anything new; they are about 
taking something that already works on a small and local scale, and making it 
work across the internet with its loosely coordinated actors.

 Looking at the above, one might conclude that a successful Ponzi scheme of 
 some sort would score well.  

:-)

If you want to look at it that way, standards, like anything that exhibits 
network effects, are a bit like a ponzi scheme: once you're inside, you benefit 
from getting others in your vicinity on board. The difference is that “late 
adopters” in a ponzi scheme are the suckers who lose their investment; while 
late adopters of a standard get the largest benefit at the smallest cost.

Best,
Richard


Re: Squaring the HTTP-range-14 circle

2011-06-16 Thread Richard Cyganiak
On 15 Jun 2011, at 23:54, Francois-Paul Servant wrote:
 And here you and Pat and Alan (and TimBL, for that matter) are preaching 
 that we can't use this one billion of fantastic free URIs to identify things 
 because it wouldn't make semantic sense.
 
 do you mean that it's OK to use wikipedia URIs instead of dbPedia ones?

I think it's ok.

 Should we stop using dbPedia URIs?

When publishing data, it's good to use URIs that resolve to structured data; 
this is what weaves data into a web. Therefore, I prefer DBpedia or Freebase 
URIs.

Best,
Richard


Re: Squaring the HTTP-range-14 circle

2011-06-16 Thread Tim Berners-Lee
I disagree with this post very strongly, and it is hard to know where to start,
and I am surprised to see it.

On 2011-06 -13, at 07:41, Richard Cyganiak wrote:

 On 13 Jun 2011, at 09:59, Christopher Gutteridge wrote:
 The real problem seems to me that making resolvable, HTTP URIs for real 
 world things was a clever but dirty hack and does not make any semantic 
 sense.
 
 Well, you worry about *real-world things*, but even people who just worry 
 about *documents* have said for two decades that the web is broken because it 
 conflates names and addresses.

No, some people didn't get the architecture in that they had learned systems 
where there that
there was a big distinction between names and address, and they had different 
properties,
and then they came across URIs which had properties of both.


 And they keep proposing things like URNs and info: URIs and tag: URIs and 
 XRIs and DOIs to fix that and to separate the naming concern from the address 
 concern. And invariably, these things fizzle around in their little niche for 
 a while and then mostly die, because this aspect that you call a “clever but 
 dirty hack” is just SO INCREDIBLY USEFUL. And being useful trumps making 
 semantic sense.

I agree ... except that ther URI architectre being like names and like 
addresses isn't a clever but dirty hack.

You then connect this with the idea of using HTTP URIs for real-world things, 
which is a separate queston.
This again is a question of architecture. Of design of a system.
We can make it work either way.
We have to work out which is best.

I don't think 303 is a quick and dirty hack.
It does mean a large extension of HTTP to be uses with non-documents.
It does have efficiency problems.
It is an architectural extension to the web architecture.

 
 HTTP has been successfully conflating names and addresses since 1989.

That is COMPLETELY irrelevant.
It is not a question of the web being fuzzy or ambiguous and getting away with 
it.
It is a clean architecture where the concepts of name and address don't 
connect directly with those of people or files on a disk or IP hosts.


 
 There is a trillion web pages out there, all named with URIs. And even if 
 just 0.1% of these pages are unambiguously about a single specific thing, 
 that gives us a billion free identifiers for real-world entities, all already 
 equipped with rich *human-readable* representations, and already linked and 
 interconnected with *human-readable*, untyped, @href links.
 
 And these one billion URIs are plain old http:// URIs. They don't have a 
 thing:// in the beginning, nor a tdb://, nor a #this or #that in the end, nor 
 do they respond with 303 redirects or to MGET requests or whatever other 
 nutty proposals we have come up with over the years to disambiguate between 
 page and topic. They are plain old http:// URIs. A billion.
 
 Then add to that another huge number that already responds with JSON or XML 
 descriptions of some interesting entity, like the one from Facebook that 
 Kingsley mentioned today in a parallel thread. Again, no thing:// or tdb:// 
 or #this or 303 or MGET on any of them.
 
 I want to use these URIs as identifiers in my data, and I have no intention 
 of redirecting through an intermediate blank node just because the TAG fucked 
 up some years ago.

If you want to give yourself the luxury of being able to refer to the subject 
of a webpage, without having to add anthing to disambiguate it from the web 
page, then for the sake of your system, so you can use the billion web pages 
for your purposes, then you now stop other like me from using semantic web 
systems to refer to those web pages, or in fact to the other hundred million 
web pages either.

Maybe you should an efficient way of doing what you want without destroying the 
system (which you as well have done so much to build)



 
 I want to tell the publishers of these web pages that they could join the web 
 of data just by adding a few @rels to some as, and a few @properties to 
 some spans, and a few @typeofs to some divs (or @itemtypes and 
 @itemprops). And I don't want to explain to them that they should also change 
 http:// to thing:// or tdb:// or add #this or #that or make their stuff 
 respond with 303 or to MGET requests because you can't squeeze a dog through 
 an HTTP connection.

Well actually I really want them to put metadata about BOTH the document and 
its subject.

There is masses of metadata already about documents.

Now you want to make it ambiguous so I don't know whether it is about the 
document or its subject? 

I don't think something like about=#product is rocket science or unnatural.

I really want people to be able to use RDF or microdata to say things about 
more than one thing in the same page

 
 And here you and Pat and Alan (and TimBL, for that matter) are preaching that 
 we can't use this one billion of fantastic free URIs to identify things 
 because it wouldn't make semantic sense.

We are saying that 

Re: Squaring the HTTP-range-14 circle

2011-06-16 Thread Giovanni Tummarello
Hi Tim ,

documents per se (a la HTTP response 200 response) on the web are less and
less relevant as opposed to the conceptual entities that are represented
by this document and  held e.g. as DB records inside CMS, social networks
etc.

e.g. a social network is about people those are the important entities.
Then there might be 1000 different HTTP documents that you can get e.g.i f
you're logged if you're not logged, if you have a cookie if you have another
cookie, if you add format=print. Specific URLs are pretty irrelevant as
they contain all sort of extra information.

Layouts of CMS or web apps change all the time (and so do the HTML docs) but
not the entities.

that's why http response 200 level annotations are of such little
ambiguity really you say you have so many annotations about documents, i
honestly dont understand what you're referring to, are these HTTP
retrievable documents? where are the annotations? are we talking about the
http headers? about the meta tags in the head these are about the
subject of the page too most of the time, not the page itself.

and this is the idea behind schema.org (opengraph whatever) which sorry Tim
you have to live with and we have to do the most with.

When someone refers to a URL which embeds a opengraph or
schema.organnotation then it is 99.+ (with the number of 9 augmenting
as the web
evolves to a rich app platform) certain that they refer to the entity
described in it and not to the web document itself (which can and does
change all the time and is of overall no conceptual relevance).

With respect to schema.org, we (as semantic web community) have not been
ignored: our work and proposals have been very well considered and then
diregarded alltogether - and for several reasons : 12 years of work, not an
agreement on ontology, not an easy way for people to publish data ( the 303
thing is a complete total utter insanity (as i had said in vain so many
times) ). etc.

So, think of how browsers work: they fix all the broken HTML markup doing
what it takes to undertand more or less the intention behind the broken
markup.

The same will exactly happen with applications that work on semantic markup
at web scale. they will do the specific cleanups and adaptations as they
need.

*the UPSIDE* of this is that RDF is a totally cool technology which can most
of the time rule them all .

Sindice is entirely RDF based, but then reads and processes microformats,
RDF, RDFa, and next week schema.org too microdata. So long life to all
really.

Fights work fighting: having RDFa play well along schema.org so that
schema.org tags can be written in RDFa and search engines will still read
it. This will allow people to still use rich representations and
vocabularies while not loosing compatibilities with the mainstream apps
which will be developed for schema.org compatible pages.

Gio








On Thu, Jun 16, 2011 at 7:04 PM, Tim Berners-Lee ti...@w3.org wrote:

 I disagree with this post very strongly, and it is hard to know where to
 start,
 and I am surprised to see it.

 On 2011-06 -13, at 07:41, Richard Cyganiak wrote:

  On 13 Jun 2011, at 09:59, Christopher Gutteridge wrote:
  The real problem seems to me that making resolvable, HTTP URIs for real
 world things was a clever but dirty hack and does not make any semantic
 sense.
 
  Well, you worry about *real-world things*, but even people who just worry
 about *documents* have said for two decades that the web is broken because
 it conflates names and addresses.

 No, some people didn't get the architecture in that they had learned
 systems where there that
 there was a big distinction between names and address, and they had
 different properties,
 and then they came across URIs which had properties of both.


  And they keep proposing things like URNs and info: URIs and tag: URIs and
 XRIs and DOIs to fix that and to separate the naming concern from the
 address concern. And invariably, these things fizzle around in their little
 niche for a while and then mostly die, because this aspect that you call a
 “clever but dirty hack” is just SO INCREDIBLY USEFUL. And being useful
 trumps making semantic sense.

 I agree ... except that ther URI architectre being like names and like
 addresses isn't a clever but dirty hack.

 You then connect this with the idea of using HTTP URIs for real-world
 things, which is a separate queston.
 This again is a question of architecture. Of design of a system.
 We can make it work either way.
 We have to work out which is best.

 I don't think 303 is a quick and dirty hack.
 It does mean a large extension of HTTP to be uses with non-documents.
 It does have efficiency problems.
 It is an architectural extension to the web architecture.

 
  HTTP has been successfully conflating names and addresses since 1989.

 That is COMPLETELY irrelevant.
 It is not a question of the web being fuzzy or ambiguous and getting away
 with it.
 It is a clean architecture where the concepts of name and address don't

Re: Squaring the HTTP-range-14 circle

2011-06-16 Thread Henry Story

On 13 Jun 2011, at 13:41, Richard Cyganiak wrote:

 I want to use these URIs as identifiers in my data, and I have no intention 
 of redirecting through an intermediate blank node just because the TAG fucked 
 up some years ago.

The TAG did not f.up as you say, and you can do what you want anyway. 

- http:// URLs with 200 responses do point to information resources.
- you can use those the way you wish to indirectly refer to you. Just change 
your vocabulary if you do.

 [snip]
 http://richard.cyganiak.de/
a foaf:Document;
dc:title Richard Cyganiak's homepage;
a foaf:Person;
foaf:name Richard Cyganiak;
owl:sameAs http://twitter.com/cygri;
.


so instead of using foaf:knows to relate a person and a document, create a 
docfriend ontology and have it relate a 
document that describes you to a number of attributes about you

http://richard.cyganiak.de/ a foaf:Document;
docfriend:name Richard Cyganiak;
dc:title: Richard Cyganiak's homepage;
docfriend:knows http://bblfish.net/ .

Then you just need rules such as 

{ ?pg docfriend:name ?nm } = { ?pg foaf:primaryTopic ?p . ?p foaf:name ?nm } 

and you can convert between the two. You don't of course need to use the bnode 
inducing foaf ontology, but can
stick to your docfriend ontology. You just will notice of course that there 
cannot be more than one person talked of per such page. A restriction you will 
find it difficult to convince some people to abide by.

This discussion is really of no importance, and is just a great time waster on 
the semantic web. I would suggest people go and build apps that work, that are 
used and that are viral: where every person who uses it increases the value of 
the network, gets others to join and use the data. 

Henry



 
 There.
 
 If your knowledge representation formalism isn't smart enough to make sense 
 of that, then it may just not be quite ready for the web, and you may have 
 some work to do.
 
 Best,
 Richard

Social Web Architect
http://bblfish.net/




Re: Squaring the HTTP-range-14 circle

2011-06-16 Thread Kingsley Idehen

On 6/16/11 6:53 PM, Giovanni Tummarello wrote:

Hi Tim ,

documents per se (a la HTTP response 200 response) on the web are 
less and less relevant as opposed to the conceptual entities that 
are represented by this document and  held e.g. as DB records inside 
CMS, social networks etc.


e.g. a social network is about people those are the important 
entities. Then there might be 1000 different HTTP documents that you 
can get e.g.i f you're logged if you're not logged, if you have a 
cookie if you have another cookie, if you add format=print. Specific 
URLs are pretty irrelevant as they contain all sort of extra information.


Layouts of CMS or web apps change all the time (and so do the HTML 
docs) but not the entities.


that's why http response 200 level annotations are of such little 
ambiguity really you say you have so many annotations about documents, 
i honestly dont understand what you're referring to, are these HTTP 
retrievable documents?


Tim is saying, and pretty clearly: there are a lot of resources in HTML 
format on the Web. You access these via URLs (Addresses). Basically, you 
GET data from Addresses.


where are the annotations? are we talking about the http headers? 
about the meta tags in the head these are about the subject of the 
page too most of the time, not the page itself.


In these resources (projected as HTML documents) there is a lot of 
metadata. Dig a little deeper, there are also varying degrees of 
metadata in the HTTP responses. What doesn't exist is use of an 
abstraction whereby the Subject Matter items (what the HTML docs are 
about) are Identified by Names that resolve to their Representations 
which are best served via graph pictorials.




and this is the idea behind schema.org http://schema.org (opengraph 
whatever) which sorry Tim you have to live with and we have to do the 
most with.
Tim is not saying he has a problem with schema.org. He might imply that 
schema.org is deviating from the aspect of AWWW that delivers the 
abstraction necessary for schema.org to refer to entities (data objects) 
by Names that are distinct from the Addresses of their Representation(s).




When someone refers to a URL which embeds a opengraph or schema.org 
http://schema.org annotation then it is 99.+ (with the number of 9 
augmenting as the web evolves to a rich app platform) certain that 
they refer to the entity described in it and not to the web document 
itself (which can and does change all the time and is of overall no 
conceptual relevance).


We are already dealing with the schema.org issues [1][2] the best way it 
can be handled until opportunity costs veer them towards upping the 
semantic fidelity of their contribution.


We can live with schema.org, but lets not conflate that effort with some 
vital fundamentals re. Linked Data and best practices based on AWWW. In 
my eyes, schema.org is a massive vector re. structured data injected 
into the Web. Semantic fidelity was never their focus. Basically, as 
stated in an older post, Google, Microsoft, Yahoo!, Facebook and 
friends, all seek to contribute structured data from their respective 
data spaces, this already makes sense to them and is 100% compatible 
with their respective business models. Naturally, we would like them to 
do more, but you can't tell them to do more, all you can do is make 
opportunity costs palpable to them and eventually they will respond.




With respect to schema.org http://schema.org, we (as semantic web 
community) have not been ignored: our work and proposals have been 
very well considered and then diregarded alltogether - and for several 
reasons : 12 years of work, not an agreement on ontology, not an easy 
way for people to publish data ( the 303 thing is a complete total 
utter insanity (as i had said in vain so many times) ). etc.


303 isn't insanity! It is basic computing re. data access by reference. 
de-reference (indirection) and address-of operations are fundamental 
elements of any kind of environment that allows access, movement, and 
manipulation of data. You always have Names and Addresses. In fact, you 
have them in the real world, but I don't want veer down a discussion on 
semiotics and philosophy.


The Web of Documents works because Document Addresses (URLs) have become 
intuitive. Evolving the Web to a Linked Data Space is a little trickier 
with HTTP URIs because the Name operation unveils a powerful but 
unnatural abstraction due to the fact that an HTTP URI based Name looks 
and feels like an HTTP URI based Location Name (Address).


HTTP 303 is just doing what programming languages do behind the scenes 
whenever you access data objects by reference. If anything, its a 
tribute to the flexibility of the HTTP protocol. Basically, we have the 
Web now pulling of the same data access and manipulation capabilities 
that host operating systems have delivered to systems developers since 
forever.


[SNIP]

Kingsley


Gio








On Thu, Jun 16, 2011 at 7:04 PM, Tim 

Re: Squaring the HTTP-range-14 circle

2011-06-16 Thread Kingsley Idehen

On 6/16/11 9:16 PM, Kingsley Idehen wrote:


We are already dealing with the schema.org issues [1][2] the best way 
it can be handled until opportunity costs veer them towards upping the 
semantic fidelity of their contribution. 


Links:

1. http://schema.rdfs.org
2. 
http://uriburner.com/describe/?url=http%3A%2F%2Fwww.openlinksw.com%2Fschemas%2Frdfs%2F 
-- our WIP effort that builds on both schema.rdfs.org and schema.org 
(more to come re. mapping to FOAF, SIOC, GoodRelations, and others) .


--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-16 Thread Pat Hayes

On Jun 15, 2011, at 7:36 PM, Danny Ayers wrote:

 On 15 June 2011 18:30, Pat Hayes pha...@ihmc.us wrote:
 
 Boy, that is a humdinger of a non-sequiteur. Given that HTTP has 
 flexibility, it is OK to identify a description of a thing with the actual 
 thing? To me that sounds like saying, given that movies are projected, it is 
 OK to say that fish are bicycles.
 
 Not that I think I did a non-sequiteur, it is totally ok to say that
 fish are bicycles, if that's what you want to say.
 
 [snip]
 
 OK, thanks. Here is your argument, as far as I can understand it.
 
 1. HTTP representations may be partial or incomplete. (Agreed.)
 2. HTTP reps can have many different media types, and this is OK. (Agreed, 
 though I cant see what relevance this has to anything.)
 3. A description is a kind of representation. (Agreed, and there was no need 
 to get into the 'isomorphism' trap. We in KRep have been calling 
 descriptions representations for decades now.)
 
 4. Therefore, a HTTP URI can simultaneously be understood as referring to a 
 document and a car.
 
 Whaaat? How in Gods name can you derive this conclusion from those premises?
 
 my wording could be better, but I stand by it...  a document
 describing the car, through HTTP, can be an equally valid
 representation of the named car resource as the car itself (as long as
 it's qualified by media type)
 

Not only do I not follow your reasoning, I don't even know what it is you are 
saying. The document is a valid *representation* of the car, yes of course. But 
as valid as the car itself? So you think a car is a representation of itself? 
Or are you drawing a contrast between the 'named car resource' and the car 
itself? ??? 

Maybe it would be best if we just dropped this now. I gather that you were 
offering me a way to make semantic sense of something, but Im not getting any 
sense at all out of this discussion, I am afraid.

Pat

 Cheers,
 Danny.
 
 
 -- 
 http://danny.ayers.name
 


IHMC (850)434 8903 or (650)494 3973   
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Re: Squaring the HTTP-range-14 circle

2011-06-16 Thread Ian Davis
Tim,

On Thu, Jun 16, 2011 at 6:04 PM, Tim Berners-Lee ti...@w3.org wrote:

 I don't think 303 is a quick and dirty hack.
 It does mean a large extension of HTTP to be uses with non-documents.
 It does have efficiency problems.
 It is an architectural extension to the web architecture.


We have had many years for this architectural extension to be adopted
and many of us producing linked data have been diligent in supporting,
promoting and educating people about it. Even I, with my many many
attempts to get this decision reconsidered, have promoted the W3C
consensus. Conversely, many more people have studied this extension
and rejected it. Companies such as Google, Facebook, Microsoft and
Yahoo, who are all W3C members and can influence these decisions
through formal channels if they wish, have looked at the httpRange
decsion and decided it doesn't work for them. Instead they have chosen
different approaches that require more effort to consume but lower the
conceptual barrier for publishers. However, they are convinced of the
need for URIs to identify things that are not just web pages which is
a huge positive.

These companies collectively account for a very large proportion of
web traffic and activity. I think just saying that they're wrong and
should change their approach is simply being dogmatic. They are
telling us that we are wrong. We should listen to them.


 If you want to give yourself the luxury of being able to refer to the subject 
 of a webpage, without having to add anthing to disambiguate it from the web 
 page, then for the sake of your system, so you can use the billion web pages 
 for your purposes, then you now stop other like me from using semantic web 
 systems to refer to those web pages, or in fact to the other hundred million 
 web pages either.


The problem here is that there are so few things that people want to
say about web pages compared with the multitude of things they want to
say about every other type of thing in existence. Yet the httpRange
decision makes the web page a privileged component. I understand why
that might have seemed a useful decision, after all this is the web we
are talking about, but it has turned out not to be. The web page is
only the medium for conveying information about the things we are
really interested in.

The analogy is metadata about a book. Very little of it is about the
physical book, i.e. the medium. Perhaps you would want to record its
dimensions, mass, colour, binding or construction. There are many many
more things you would want to record about the book's content, themes,
people and places mentioned, author etc.

 Maybe you should an efficient way of doing what you want without destroying 
 the system (which you as well have done so much to build)


I think this is unreasonably strong. Nothing is being destroyed.
Nothing has broken.

A few days after I wrote this post
(http://blog.iandavis.com/2010/12/06/back-to-basics/) I changed one of
the many linked datasets I maintain to stop using 303 redirects over a
few million resources. No-one has noticed yet. Nothing has broken.

Ian



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-16 Thread Pat Hayes

On Jun 15, 2011, at 8:27 PM, Danny Ayers wrote:

 On 16 June 2011 02:26, Pat Hayes pha...@ihmc.us wrote:
 
 If you agree with Danny that a description can be a substitute for the thing 
 it describes, then I am waiting to hear how one of you will re-write 
 classical model theory to accommodate this classical use/mention error. You 
 might want to start by reading Korzybski's 'General Semantics'.
 
 IANAL, but I have heard of the use/mention thing, quite often. I don't
 honestly know whether classical model theory needs a rewrite, but I'm
 sure it doesn't on the basis of this thread. I also don't know enough
 to know whether it's applicable - from your reaction, I suspect not.
 
 As a publisher of information on the Web, I'm pretty much free to say
 what I like (cf. Tim's Design Notes). Fish are bicycles. But that
 isn't very useful.
 
 But if I say Sasha is some kind of weird Collie-German Shepherd cross,
 that has direct relevance to Sasha herself.

True.

 More, the arcs in my
 description between Sasha and her parents

Sasha and her parents are not themselves in your description. I presume you 
mean, the arcs between the terms you use, in your description, to refer to 
Sasha and her parents. 

 have direct correspondence
 with the arcs between Sasha and her parents.

Sasha and her parents don't have arcs between them (unless you are indulging in 
some cruel treatment of animals.) I presume you mean to refer to certain 
relationships which hold between Sasha and her parents.

In this simple case (explicitly named relationships, explicit referring names) 
there is a kind of structural correspondence between the description and the 
reality, indeed. But as soon as you make the descriptive language even slightly 
more expressive, this breaks down. (Try adding negation or disjunction of even 
blank nodes.) And as soon as you admit that reality is more complex than any 
description of it, it breaks down. So its not a very good foundation to build a 
semantic theory upon. 

 There is information
 common to the reality and the description (at least in human terms).

No. The reality is what it is; the information is held in the description (the 
one with the arcs and the names in it.) The information is ABOUT Sash and her 
parents (and the relationship of parenthood and various categories of 
doggitude, and so forth.) 

 The description may, when you stand back, be very different in its
 nature to the reality,

You betcha.

 but if you wish to make use of the information,
 such common aspects are valuable.

What common aspects? If you mean to refer to the fact that a description with 
arcs and names can be TRUE OF some aspect of reality, you are talking about 
classical model-theoretic semantics, which is based on the idea of reference 
(AKA denotation) at its root; it is the interpretation mapping from names to 
the things they are interpreted to refer to (eg between Sasha and Sasha.) But 
the truth-in-an-interpretation relationship is not similarity or isomorphism, 
and it certainly does not warrant identifying the name with the thing named. 
Quite the contrary, it relies upon keeping this distinction clear. As Korzybski 
famously said, the map is not the territory.

 We've already established that HTTP
 doesn't deal with any kind of one true representation. Data about
 Sasha's parentage isn't Sasha, but it's closer than a non-committal
 303 or rdfs:seeAlso.

Closer? In what metric? I would say it is about as different as anything can 
get. 

 There's nothing around HTTP that says it can't be
 given the same name, and it's a darn sight more useful than a
 wave-over-there redirect or a random fish/bike association. I can't
 see anything it breaks either.

OF COURSE it breaks things. It might be true to say that Sasha is a 
Collie-German Shepherd cross, but Sasha's description or web page certainly 
isn't. It might be true to say that the description is written in RDF, but 
Sasha isn't. 

Pat

 
 Cheers,
 Danny.
 
 
 
 
 
 
 
 -- 
 http://danny.ayers.name
 


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Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-16 Thread Pat Hayes

On Jun 15, 2011, at 10:04 PM, Jason Borro wrote:

 Apologies if my keyboard sneered at you, though comparing an application 
 problem to 1% of hr14 at web scale hardly trivializes it; certainly it does 
 the opposite.  Good luck preserving your mental model if you require 
 webmasters to spell Korzybski.

I'd prefer they actually read him, though I won't hold my breath. Sorry to 
bother you by using a very long foreign name. 

Pat

 
 On 6/15/2011 6:26 PM, Pat Hayes wrote:
 On Jun 15, 2011, at 1:35 PM, Jason Borro wrote:
 
 I agree with your sentiments Danny, fwiw.  The current scheme is a burden 
 on publishers for the sake of a handful of applications that wish to refer 
 to these information resources themselves, making them unable to talk 
 about Web pages using the Web description language RDF.
 
 What about minting a new URI at 
 http://information.resourcifier.net/encodedURI; or similar for talking 
 about such things?  The service could even add value by tracking last 
 update times, content types, encodings, etc.
 
 Jason
 
 p.s. Don't bother criticizing the half baked idea, I thought about it for  
 10 seconds.  The point is 100 alternatives could have been hashed out in 
 the time spent discussing and implementing http-range-14.
 I confess to finding this kind of sneering remark rather annoying. If you 
 think it is this trivial to work out some 'alternative', why don't you come 
 up with a few actual ideas and see what happens when they get a little peer 
 review? Your idea, above, hardly makes first base, as Im sure you already 
 realized when you added the p.s. So why not try inventing one that has a 
 snowballs chance in hell of actually working? Im sure that the world would 
 be delighted if you could solve this trivial problem in 5 ways, let alone a 
 hundred.
 
 If you agree with Danny that a description can be a substitute for the thing 
 it describes, then I am waiting to hear how one of you will re-write 
 classical model theory to accommodate this classical use/mention error. You 
 might want to start by reading Korzybski's 'General Semantics'.
 
 Pat
 
 
 
 


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Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-16 Thread Pat Hayes

On Jun 16, 2011, at 4:38 AM, Richard Cyganiak wrote:

 On 16 Jun 2011, at 07:05, Alan Ruttenberg wrote:
 I think that we are beyond the point where that kind of extremely 
 idealised account is useful for evaluating web technologies.
 
 We will agree to disagree then. Perhaps in another thread you will say
 what *will* be useful for evaluating web technologies.
 
 Adoption trends, ergonomics, fit with the existing technology ecosystem, 
 existence of migration paths, marketability, potential of network effects.
 
 
 Does what the technology *accomplishes* fit in there somewhere?
 
 Web technologies are never about accomplishing anything new; they are about 
 taking something that already works on a small and local scale, and making it 
 work across the internet with its loosely coordinated actors.
 
 Looking at the above, one might conclude that a successful Ponzi scheme of 
 some sort would score well.  
 
 :-)
 
 If you want to look at it that way, standards, like anything that exhibits 
 network effects, are a bit like a ponzi scheme: once you're inside, you 
 benefit from getting others in your vicinity on board. The difference is that 
 “late adopters” in a ponzi scheme are the suckers who lose their investment; 
 while late adopters of a standard get the largest benefit at the smallest 
 cost.


LOL

Pat


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Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-16 Thread David Booth
On Thu, 2011-06-16 at 16:38 -0500, Pat Hayes wrote:
 On Jun 15, 2011, at 8:27 PM, Danny Ayers wrote:
[ . . . ]
  There's nothing around HTTP that says it can't be
  given the same name, and it's a darn sight more useful than a
  wave-over-there redirect or a random fish/bike association. I can't
  see anything it breaks either.
 
 OF COURSE it breaks things. It might be true to say that Sasha is a
 Collie-German Shepherd cross, but Sasha's description or web page
 certainly isn't. It might be true to say that the description is
 written in RDF, but Sasha isn't. 

Let's go further and clarify exactly what breaks: Using the same URI
both for Sasha and Sasha's web page breaks *some* applications and not
others.  Applications that need to distinguish between dogs and web
pages will find the URI ambiguous; applications that do not will be
perfectly happy.  This state of affairs is a universal fact of life that
is true of *all* possible distinctions that may be made, regardless of
whether the distinction is between web pages and dogs, or between
different kinds of dogs, or between different kinds of proteins or
anything else. 

Except in the absurdly reductionist sense that *every* URI is ambiguous
(because finer distinctions can always be made), whether a URI is
ambiguous or unambiguous is *not* a fundamental property of the URI:
ambiguity is relative to the *application* that is using that URI. 

Given this fact of life, I maintain that permitting the same URI to
denote both a web page and a dog does *not* break the architecture of
the web.  

I agree with TimBL that this is a design choice about the architecture
of the web, and a clean, extensible architecture is needed.

I agree with TimBL that 303 (and hash URIs) are useful for those who
*choose* to distinguish between the web page and something else.

I agree with TimBL that the httpRange-14 rule is very useful, even if it
was not ideally stated, and should *not* be abandoned.  However, the
major flaw lies not in the httpRange-14 rule itself, but in the
associated assumption that a URI cannot sensibly denote both an
information resource and a dog:
http://www.w3.org/TR/webarch/#def-information-resource
This assumption is fatally flawed because: (a) it attempts to make an
IR/non-IR distinction that can never be nailed down precisely (as
several people have pointed out); and (b) it unnecessarily elevates one
particular axis of ambiguity over all others.  It is analogous to a rule
that says all URIs for dogs MUST distinguish between male dogs and
female dogs: the only applications that break without this rule are the
ones that *need* to distinguish between male dogs and female dogs.  All
other applications will continue to work just fine without it.   And
that is exactly the way it should be for *any* axis of ambiguity.

I agree with TimBL that it is *good* to distinguish between web pages
and dogs -- and we should encourage folks to do so -- because doing so
*does* help applications that need this distinction.  But the failure to
make this distinction does *not* break the web architecture any more
than a failure to distinguish between male dogs and female dogs.


-- 
David Booth, Ph.D.
http://dbooth.org/

Opinions expressed herein are those of the author and do not necessarily
reflect those of his employer.




Re: Squaring the HTTP-range-14 circle

2011-06-16 Thread Tim Berners-Lee
Ian,

On 2011-06 -16, at 16:41, Ian Davis wrote:

 Tim,
 
 On Thu, Jun 16, 2011 at 6:04 PM, Tim Berners-Lee ti...@w3.org wrote:
 
 I don't think 303 is a quick and dirty hack.
 It does mean a large extension of HTTP to be uses with non-documents.
 It does have efficiency problems.
 It is an architectural extension to the web architecture.
 
 
 We have had many years for this architectural extension to be adopted
 and many of us producing linked data have been diligent in supporting,
 promoting and educating people about it. Even I, with my many many
 attempts to get this decision reconsidered, have promoted the W3C
 consensus. Conversely, many more people have studied this extension
 and rejected it. Companies such as Google, Facebook, Microsoft and
 Yahoo, who are all W3C members and can influence these decisions
 through formal channels if they wish, have looked at the httpRange
 decsion and decided it doesn't work for them.

I haven't seen that them saying that.   I have only seen the 
resulting RDFa.  

 Instead they have chosen
 different approaches that require more effort to consume but lower the
 conceptual barrier for publishers. However, they are convinced of the
 need for URIs to identify things that are not just web pages which is
 a huge positive.

Each of these players has said they nee to use the same URI for BOTH
the document and the dog?  It was perhaps just taking
RDF/a as non-rdf by people who weren't using it in RDF systems and so who were
not combining it with info about the web page.


 These companies collectively account for a very large proportion of
 web traffic and activity. I think just saying that they're wrong and
 should change their approach is simply being dogmatic. They are
 telling us that we are wrong. We should listen to them.

I have not said that they are wrong in trying to make it very simple for 
people to say things about the subject of the page.
Facebook used the standard in the simplest way could.

For example, OGP uses consistently a set of properties which
of the style:

  ogp:foo Whatever.

where other might have written

 foaf:primarySubject #grapes.
#grapes  ex:foo  Whatever.

(Here ex: is a parallel namespace to ogp:)
These triples are all consistent, in fact, so a rule which generates one for the
other is easy.  you can also do it in OWL by declaring org:foo to be a chain of 
primarySubject and ex:foo.

Two ways to go to make this work, and many more can be done

1) Allow the parallel properties to exist and be related publically to the 
normal ones.

2) Fix the RDFa/microdata/whatever syntax to  make it trivial and obvious to 
make statements
about a single subject.

We can clearly do both. 

 
 
 If you want to give yourself the luxury of being able to refer to the 
 subject of a webpage, without having to add anthing to disambiguate it from 
 the web page, then for the sake of your system, so you can use the billion 
 web pages for your purposes, then you now stop other like me from using 
 semantic web systems to refer to those web pages, or in fact to the other 
 hundred million web pages either.
 
 
 The problem here is that there are so few things that people want to
 say about web pages compared with the multitude of things they want to
 say about every other type of thing in existence.

Well, that is a wonderful new thing.  For a long while it was difficult to
put data on the web, while there is quite a lot of metadata.
Wonderful idea that the semantic web may be beating the document
web hands down but that's not totally clear that we should trash the
use of URIs for use to refer to documents as do in the document web.



 Yet the httpRange
 decision makes the web page a privileged component.

With 200 yes, as you have to allow the exiting web, small though you say it is, 
to still function, when 200 is returned.

 I understand why
 that might have seemed a useful decision, after all this is the web we
 are talking about, but it has turned out not to be. The web page is
 only the medium for conveying information about the things we are
 really interested in.

That may be true, but that doesn't mean that anyone should
use the same URI for talking about both.


 The analogy is metadata about a book. Very little of it is about the
 physical book, i.e. the medium. Perhaps you would want to record its
 dimensions, mass, colour, binding or construction. There are many many
 more things you would want to record about the book's content, themes,
 people and places mentioned, author etc.
 
 Maybe you should an efficient way of doing what you want without destroying 
 the system (which you as well have done so much to build)
 
 
 I think this is unreasonably strong. Nothing is being destroyed.
 Nothing has broken.

If you use HTTP 200 for something different, then 
you break my ability to look at a page, review it, and then
express my review in RDF,  using the page's URI as the identifier.


 
 A few days 

Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-15 Thread Danny Ayers
On 13 June 2011 07:52, Pat Hayes pha...@ihmc.us wrote:
 OK, I am now completely and utterly lost. I have no idea what you are saying 
 or how any of it is relevant to the http-range-14 issue. Want to try running 
 it past me again? Bear in mind that I do not accept your claim that a 
 description of something is in any useful sense isomorphic to the thing it 
 describes. As in, some RDF describing, say, the Eiffel tower is not in any 
 way isomorphic to the actual tower. (I also do not understand why you think 
 this claim matters, by the way.)

 Perhaps we are understanding the meaning of http-range-14 differently. My 
 understanding of it is as follows: if an HTTP GET applied to a bare URI 
 http:x returns a 200 response, then http:x is understood to refer to (to be a 
 name for, to denote) the resource that emitted the response. Hence, it 
 follows that if a URI is intended to refer to something else, it has to emit 
 a different response, and a 303 redirect is appropriate. It also follows that 
 in the 200 case, the thing denoted has to be the kind of thing that can 
 possibly emit an HTTP response, thereby excluding a whole lot of things, such 
 as dogs, from being the referent in such cases.

Even with information resources there's a lot of flexibility in what
HTTP can legitimately respond with, there needn't be bitwise identity
across representations of an identified resource. Given this, I'm
proposing a description can be considered a good-enough substitute for
an identified thing. Bearing in mind it's entirely up to the publisher
if they wish to conflate things, and up to the consumer to try and
make sense of it.

As a last attempt - this is a tar pit! - doing my best to take on
board your (and other's) comments, I've wrapped up my claims in a blog
post: http://dannyayers.com/2011/06/15/httpRange-14-Reflux

Cheers,
Danny.

-- 
http://danny.ayers.name



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-15 Thread Jason Borro
I agree with your sentiments Danny, fwiw.  The current scheme is a 
burden on publishers for the sake of a handful of applications that wish 
to refer to these information resources themselves, making them 
unable to talk about Web pages using the Web description language RDF.


What about minting a new URI at 
http://information.resourcifier.net/encodedURI; or similar for talking 
about such things?  The service could even add value by tracking last 
update times, content types, encodings, etc.


Jason

p.s. Don't bother criticizing the half baked idea, I thought about it 
for  10 seconds.  The point is 100 alternatives could have been hashed 
out in the time spent discussing and implementing http-range-14.  Kudos 
to google et al for ignoring it.


On 6/15/2011 9:27 AM, Danny Ayers wrote:

On 13 June 2011 07:52, Pat Hayespha...@ihmc.us  wrote:

OK, I am now completely and utterly lost. I have no idea what you are saying or 
how any of it is relevant to the http-range-14 issue. Want to try running it 
past me again? Bear in mind that I do not accept your claim that a description 
of something is in any useful sense isomorphic to the thing it describes. As 
in, some RDF describing, say, the Eiffel tower is not in any way isomorphic to 
the actual tower. (I also do not understand why you think this claim matters, 
by the way.)
Perhaps we are understanding the meaning of http-range-14 differently. My 
understanding of it is as follows: if an HTTP GET applied to a bare URI http:x 
returns a 200 response, then http:x is understood to refer to (to be a name 
for, to denote) the resource that emitted the response. Hence, it follows that 
if a URI is intended to refer to something else, it has to emit a different 
response, and a 303 redirect is appropriate. It also follows that in the 200 
case, the thing denoted has to be the kind of thing that can possibly emit an 
HTTP response, thereby excluding a whole lot of things, such as dogs, from 
being the referent in such cases.

Even with information resources there's a lot of flexibility in what
HTTP can legitimately respond with, there needn't be bitwise identity
across representations of an identified resource. Given this, I'm
proposing a description can be considered a good-enough substitute for
an identified thing. Bearing in mind it's entirely up to the publisher
if they wish to conflate things, and up to the consumer to try and
make sense of it.

As a last attempt - this is a tar pit! - doing my best to take on
board your (and other's) comments, I've wrapped up my claims in a blog
post: http://dannyayers.com/2011/06/15/httpRange-14-Reflux

Cheers,
Danny.






Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-15 Thread William Waites
* [2011-06-14 08:55:09 -0700] Pat Hayes pha...@ihmc.us écrit:

] Well, you have got me confused. Are you saying here that it does
] in fact make sense to say that a description of the eiffel tower
] is 356M tall? 

I'm just saying that things like this will be published because the
publisher is confused, or mistaken or doesn't think that making the
distinction is important or convenient and consumers of the data have
to deal with it.

We should encourage the publishers to do a better job but some of them
will balk and sometimes, like with the schema.org that started this
thread, big, important publishers with a lot of influence will balk.
If we're lucky we can convince them to fix it, otherwise writers of
software that consumes the data and tries to reason with it have to
work out a way to be robust in the face of this kind of ambiguity.

That's all.

-w
-- 
William Waitesmailto:w...@styx.org
http://river.styx.org/ww/sip:w...@styx.org
F4B3 39BF E775 CF42 0BAB  3DF0 BE40 A6DF B06F FD45



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-15 Thread Kingsley Idehen

On 6/15/11 4:27 PM, Danny Ayers wrote:

On 13 June 2011 07:52, Pat Hayespha...@ihmc.us  wrote:

OK, I am now completely and utterly lost. I have no idea what you are saying or 
how any of it is relevant to the http-range-14 issue. Want to try running it 
past me again? Bear in mind that I do not accept your claim that a description 
of something is in any useful sense isomorphic to the thing it describes. As 
in, some RDF describing, say, the Eiffel tower is not in any way isomorphic to 
the actual tower. (I also do not understand why you think this claim matters, 
by the way.)
Perhaps we are understanding the meaning of http-range-14 differently. My 
understanding of it is as follows: if an HTTP GET applied to a bare URI http:x 
returns a 200 response, then http:x is understood to refer to (to be a name 
for, to denote) the resource that emitted the response. Hence, it follows that 
if a URI is intended to refer to something else, it has to emit a different 
response, and a 303 redirect is appropriate. It also follows that in the 200 
case, the thing denoted has to be the kind of thing that can possibly emit an 
HTTP response, thereby excluding a whole lot of things, such as dogs, from 
being the referent in such cases.

Even with information resources there's a lot of flexibility in what
HTTP can legitimately respond with, there needn't be bitwise identity
across representations of an identified resource. Given this, I'm
proposing a description can be considered a good-enough substitute for
an identified thing. Bearing in mind it's entirely up to the publisher
if they wish to conflate things, and up to the consumer to try and
make sense of it.

As a last attempt - this is a tar pit! - doing my best to take on
board your (and other's) comments, I've wrapped up my claims in a blog
post: http://dannyayers.com/2011/06/15/httpRange-14-Reflux

Cheers,
Danny.


Danny,

This is part of the problem:

TBL's argument: the HTTP URIs (without #) should be understood as 
referring to documents, not cars.


It assumes that the audience doesn't have a clue, so the description has 
to be so condescending albeit inadvertent.


How about:
TBL's argument: the HTTP URIs (without #) should be understood as 
referring to an Address. A Data Source Name. What data publisher 
provides to user agents for accessing specific data in a given format, 
courtesy of content negotiation or lack thereof etc..


The confusion is a self inflicted one courtesy of narrative style and 
tone, methinks.


URIs abstract Names and Addresses. This whole thing isn't unlike DNS. 
Points of presence on TCP/IP networks have NIC addresses and cnames, 
courtesy of DNS. Spreadsheets have offered cell addresses and cell names 
since forever. Programmers have worked with de-reference (indirection) 
and address-of operators forever. Most of the time when they encounter 
the: ... is a document, not cars ...  style narrative, its throws them 
for a loop!


As you know, a Document == Data Container that's projected to users via 
user agents (typically browsers) using a specific presentation oriented 
metaphor.


Using 303 to deliver indirection is an accurate reflection of the 
required heuristic for implementing de-reference (indirection) via HTTP 
URI based Names. Otherwise, use a # terminated URI and get similar (but 
ultimately limited) effects without an actual 303.


Web users started off using Addresses as Names for Resources (Web Docs). 
Now we're introducing a new abstraction where Name and Address are 
Distinct (i.e., we have Named Objects and Object Representation 
Addresses, interwoven), thus we need to find a variety of ways to 
explain and demonstrate this new abstraction generally known as Linked 
Data. One size never fits all, and http-range-14 is certainly not going 
to be the narrative that breaks that age-old mold :-)


--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle

2011-06-15 Thread Danny Ayers
Awesome rant Richard!

I think this bit would work better live :

 I want to tell the publishers of these web pages that they could join the web 
 of data just by adding a few @rels to some as, and a few @properties to 
 some spans, and a few @typeofs to some divs (or @itemtypes and 
 @itemprops). And I don't want to explain to them that they should also change 
 http:// to thing:// or tdb:// or add #this or #that or make their stuff 
 respond with 303 or to MGET requests because you can't squeeze a dog through 
 an HTTP connection.

for arguments with value, you may have hit the nail on the head here :

 Being useful trumps making semantic sense. The web succeeded *because* it 
 conflates name and address. The web of data will succeed *because* it 
 conflates a thing and a web page about the thing.

Now tell me, why is it so easy to wind you up on these issues?

Cheers,
Danny.

-- 
http://danny.ayers.name



Re: Squaring the HTTP-range-14 circle

2011-06-15 Thread Danny Ayers
On 14 June 2011 10:49, Richard Cyganiak rich...@cyganiak.de wrote:
 On 13 Jun 2011, at 20:51, David Booth wrote:
 http://richard.cyganiak.de/
    a foaf:Document;
    dc:title Richard Cyganiak's homepage;
    a foaf:Person;
    foaf:name Richard Cyganiak;
    owl:sameAs http://twitter.com/cygri;
    .

 That should be fine for applications that do not need to distinguish
 between foaf:Documents and foaf:Persons . . . which is a large class of
 applications.  OTOH, there *are* applications that need to distinguish
 between foaf:Documents and foaf:Persons.  *Those* applications will need
 to apply disambiguation techniques, and some of their owners will
 (wrongly) blame you for the perceived extra work it causes them --
 extra only because they happen to be implementing a different class of
 application than your data best supports.

 Yes, good analysis.

Not sure I'm comfortable with the notion of data being published with
a predetermined class of consuming applications. The bottom lines are:
publish what you want, interpret how you see fit. Somewhere between
Postel and Aleister Crowley.

My comments on httpRange-14 could not be any less relevant to the
reality, I'd just rather things were kinda tidy rather than swept
under the carpet (at home I have dog fur on the tiles). Yes, I do
think if we can have some approximation of a consistent common model,
that is better for communication. But it's pretty much a certainty
that the best course of action is to live with whatever comes up and
make the best of it. Build on what we can. Cue cliche if history has
taught us anything...

Cheers,
Danny.

-- 
http://danny.ayers.name



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-15 Thread Pat Hayes

On Jun 15, 2011, at 1:35 PM, Jason Borro wrote:

 I agree with your sentiments Danny, fwiw.  The current scheme is a burden on 
 publishers for the sake of a handful of applications that wish to refer to 
 these information resources themselves, making them unable to talk about 
 Web pages using the Web description language RDF.
 
 What about minting a new URI at 
 http://information.resourcifier.net/encodedURI; or similar for talking about 
 such things?  The service could even add value by tracking last update times, 
 content types, encodings, etc.
 
 Jason
 
 p.s. Don't bother criticizing the half baked idea, I thought about it for  
 10 seconds.  The point is 100 alternatives could have been hashed out in the 
 time spent discussing and implementing http-range-14.  

I confess to finding this kind of sneering remark rather annoying. If you think 
it is this trivial to work out some 'alternative', why don't you come up with a 
few actual ideas and see what happens when they get a little peer review? Your 
idea, above, hardly makes first base, as Im sure you already realized when you 
added the p.s. So why not try inventing one that has a snowballs chance in hell 
of actually working? Im sure that the world would be delighted if you could 
solve this trivial problem in 5 ways, let alone a hundred. 

If you agree with Danny that a description can be a substitute for the thing it 
describes, then I am waiting to hear how one of you will re-write classical 
model theory to accommodate this classical use/mention error. You might want to 
start by reading Korzybski's 'General Semantics'. 

Pat

 Kudos to google et al for ignoring it.
 
 On 6/15/2011 9:27 AM, Danny Ayers wrote:
 On 13 June 2011 07:52, Pat Hayespha...@ihmc.us  wrote:
 OK, I am now completely and utterly lost. I have no idea what you are 
 saying or how any of it is relevant to the http-range-14 issue. Want to try 
 running it past me again? Bear in mind that I do not accept your claim that 
 a description of something is in any useful sense isomorphic to the thing 
 it describes. As in, some RDF describing, say, the Eiffel tower is not in 
 any way isomorphic to the actual tower. (I also do not understand why you 
 think this claim matters, by the way.)
 Perhaps we are understanding the meaning of http-range-14 differently. My 
 understanding of it is as follows: if an HTTP GET applied to a bare URI 
 http:x returns a 200 response, then http:x is understood to refer to (to be 
 a name for, to denote) the resource that emitted the response. Hence, it 
 follows that if a URI is intended to refer to something else, it has to 
 emit a different response, and a 303 redirect is appropriate. It also 
 follows that in the 200 case, the thing denoted has to be the kind of thing 
 that can possibly emit an HTTP response, thereby excluding a whole lot of 
 things, such as dogs, from being the referent in such cases.
 Even with information resources there's a lot of flexibility in what
 HTTP can legitimately respond with, there needn't be bitwise identity
 across representations of an identified resource. Given this, I'm
 proposing a description can be considered a good-enough substitute for
 an identified thing. Bearing in mind it's entirely up to the publisher
 if they wish to conflate things, and up to the consumer to try and
 make sense of it.
 
 As a last attempt - this is a tar pit! - doing my best to take on
 board your (and other's) comments, I've wrapped up my claims in a blog
 post: http://dannyayers.com/2011/06/15/httpRange-14-Reflux
 
 Cheers,
 Danny.
 
 
 
 


IHMC (850)434 8903 or (650)494 3973   
40 South Alcaniz St.   (850)202 4416   office
Pensacola(850)202 4440   fax
FL 32502  (850)291 0667   mobile
phayesAT-SIGNihmc.us   http://www.ihmc.us/users/phayes








Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-15 Thread Danny Ayers
On 15 June 2011 18:30, Pat Hayes pha...@ihmc.us wrote:

 Boy, that is a humdinger of a non-sequiteur. Given that HTTP has flexibility, 
 it is OK to identify a description of a thing with the actual thing? To me 
 that sounds like saying, given that movies are projected, it is OK to say 
 that fish are bicycles.

Not that I think I did a non-sequiteur, it is totally ok to say that
fish are bicycles, if that's what you want to say.

[snip]

 OK, thanks. Here is your argument, as far as I can understand it.

 1. HTTP representations may be partial or incomplete. (Agreed.)
 2. HTTP reps can have many different media types, and this is OK. (Agreed, 
 though I cant see what relevance this has to anything.)
 3. A description is a kind of representation. (Agreed, and there was no need 
 to get into the 'isomorphism' trap. We in KRep have been calling descriptions 
 representations for decades now.)

 4. Therefore, a HTTP URI can simultaneously be understood as referring to a 
 document and a car.

 Whaaat? How in Gods name can you derive this conclusion from those premises?

my wording could be better, but I stand by it...  a document
describing the car, through HTTP, can be an equally valid
representation of the named car resource as the car itself (as long as
it's qualified by media type)

Cheers,
Danny.


-- 
http://danny.ayers.name



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-15 Thread Danny Ayers
On 16 June 2011 02:26, Pat Hayes pha...@ihmc.us wrote:

 If you agree with Danny that a description can be a substitute for the thing 
 it describes, then I am waiting to hear how one of you will re-write 
 classical model theory to accommodate this classical use/mention error. You 
 might want to start by reading Korzybski's 'General Semantics'.

IANAL, but I have heard of the use/mention thing, quite often. I don't
honestly know whether classical model theory needs a rewrite, but I'm
sure it doesn't on the basis of this thread. I also don't know enough
to know whether it's applicable - from your reaction, I suspect not.

As a publisher of information on the Web, I'm pretty much free to say
what I like (cf. Tim's Design Notes). Fish are bicycles. But that
isn't very useful.

But if I say Sasha is some kind of weird Collie-German Shepherd cross,
that has direct relevance to Sasha herself. More, the arcs in my
description between Sasha and her parents have direct correspondence
with the arcs between Sasha and her parents. There is information
common to the reality and the description (at least in human terms).
The description may, when you stand back, be very different in its
nature to the reality, but if you wish to make use of the information,
such common aspects are valuable. We've already established that HTTP
doesn't deal with any kind of one true representation. Data about
Sasha's parentage isn't Sasha, but it's closer than a non-committal
303 or rdfs:seeAlso. There's nothing around HTTP that says it can't be
given the same name, and it's a darn sight more useful than a
wave-over-there redirect or a random fish/bike association. I can't
see anything it breaks either.

Cheers,
Danny.







-- 
http://danny.ayers.name



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-15 Thread Alan Ruttenberg
On Wed, Jun 15, 2011 at 11:04 PM, Jason Borro ja...@openguid.net wrote:

 Good luck preserving your mental model if you require webmasters to spell
 Korzybski.


This is an odd comment. It's like saying good luck preserving your model of
TCP if you require network developers to know where Postel worked.

TCP has to work, whether or not webmasters know the intellectual history its
development, and the same will be true of whatever eventually becomes what
the semweb ideas are aiming at. Pat's knows something about the history of
what's known to work and what isn't. You ignore that history at the peril of
your ideas simply not working.

-Alan


Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-14 Thread Michael Brunnbauer

re

On Mon, Jun 13, 2011 at 08:33:47PM -0700, Pat Hayes wrote:
 But if you are a semantic inference engine, and you get the dog and its
 picture muddled, will you likely generate a lot of nonsensical assertions?
 Answer, Yes, you will. Which is the key point at issue here.

We should be able to present the user a lot of sensical assertions (and maybe
some nonsensical ones) if we know he is concerned with information about dogs
instead of information about pictures. 

Anyway - I think special purpose reasoners will play a much bigger role in the
near future than general purpose reasoners because they perform better with
big and messy data.

And publishers will start to differenciate between dogs and pictures of dogs as
soon as it provides them added value. Until that day, we will have to live
with the situation and try to nudge people in the right direction (which
includes httprange-14). But mass adoption means messy data in any case.

Regards,

Michael Brunnbauer

-- 
++  Michael Brunnbauer
++  netEstate GmbH
++  Geisenhausener Straße 11a
++  81379 München
++  Tel +49 89 32 19 77 80
++  Fax +49 89 32 19 77 89 
++  E-Mail bru...@netestate.de
++  http://www.netestate.de/
++
++  Sitz: München, HRB Nr.142452 (Handelsregister B München)
++  USt-IdNr. DE221033342
++  Geschäftsführer: Michael Brunnbauer, Franz Brunnbauer
++  Prokurist: Dipl. Kfm. (Univ.) Markus Hendel



Re: Squaring the HTTP-range-14 circle

2011-06-14 Thread Richard Cyganiak
On 13 Jun 2011, at 20:51, David Booth wrote:
 http://richard.cyganiak.de/
a foaf:Document;
dc:title Richard Cyganiak's homepage;
a foaf:Person;
foaf:name Richard Cyganiak;
owl:sameAs http://twitter.com/cygri;
.
 
 That should be fine for applications that do not need to distinguish
 between foaf:Documents and foaf:Persons . . . which is a large class of
 applications.  OTOH, there *are* applications that need to distinguish
 between foaf:Documents and foaf:Persons.  *Those* applications will need
 to apply disambiguation techniques, and some of their owners will
 (wrongly) blame you for the perceived extra work it causes them --
 extra only because they happen to be implementing a different class of
 application than your data best supports.

Yes, good analysis.

Best,
Richard



Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-13 Thread Kingsley Idehen

On 6/13/11 1:28 AM, Pat Hayes wrote:

But I don't think all this is really germane to the http-range-14 issue. The 
point there is, does the URI refer to something like a representation 
(information resource, website, document, RDF graph, whatever) or something 
which definitely canNOT be sent over a wire?


The Referent of a URI re., http-range-14 is the observation (or 
description) subject. In this context the subject may or may not be a 
real world object or entity.


In the context of Linked Data, the observation (or description) subject 
URI resolves to a Representation of its Referent. Actual representation 
is accessible via an Address. Data representation formats are 
*optionally* negotiable e.g., via content negotiation, and ultimately 
varied i.e., many serialization formats for byte stream that actually 
transmits data from its source to its consumers.



--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-13 Thread Kingsley Idehen

On 6/13/11 6:52 AM, Pat Hayes wrote:

OK, I am now completely and utterly lost. I have no idea what you are saying or 
how any of it is relevant to the http-range-14 issue. Want to try running it 
past me again? Bear in mind that I do not accept your claim that a description 
of something is in any useful sense isomorphic to the thing it describes. As 
in, some RDF describing, say, the Eiffel tower is not in any way isomorphic to 
the actual tower. (I also do not understand why you think this claim matters, 
by the way.)

Perhaps we are understanding the meaning of http-range-14 differently. My 
understanding of it is as follows: if an HTTP GET applied to a bare URI http:x 
returns a 200 response, then http:x is understood to refer to (to be a name 
for, to denote) the resource that emitted the response.


No, 200 OK means this URI is functionally an Address i.e., a place 
that's ready to transmit the byte stream associated with the Address.



  Hence, it follows that if a URI is intended to refer to something else, it 
has to emit a different response, and a 303 redirect is appropriate.


When the functionality of the URI changes i.e., its a Name rather than 
an Address, courtesy of de-reference (indirection), there is a 303 
redirect (an act of indirection).



  It also follows that in the 200 case, the thing denoted has to be the kind of 
thing that can possibly emit an HTTP response,


Yes, a data server indicates to a client that a given Address is 
functional i.e., I'll transmit you a byte stream from this place which I 
crafted for this specific purpose.



  thereby excluding a whole lot of things, such as dogs, from being the 
referent in such cases.


Yes, if the response is 200 OK since the URI is an Address. No if the 
response is a 303 since the URI is a Name.


It still boils down to the URI abstraction which ingeniously caters for 
two vital data access by reference operations: Name (for de-reference 
and indirection) and Address (for Data Access).



Kingsley

Pat


On Jun 12, 2011, at 6:46 PM, Danny Ayers wrote:


On 13 June 2011 02:28, Pat Hayespha...@ihmc.us  wrote:


Next point: there can indeed be correspondences between the syntactic structure 
of a description and the aspects of reality it describes.

That is what I was calling isomorphism (which I still don't think was
inaccurate). But ok, say there are correspondences instead. I would
suggest that those correspondences are enough to allow the description
to take the place of a representation under HTTP definitions.


But I don't think all this is really germane to the http-range-14 issue. The 
point there is, does the URI refer to something like a representation 
(information resource, website, document, RDF graph, whatever) or something 
which definitely canNOT be sent over a wire?

I'm saying conceptually it doesn't matter if you can put it over the
wire or not.


But replace a novel written by a dog for dog in the above. Why
should the concept of a document be fundamentally any different from
the concept of a dog, hence representations of a document and
representations of a dog?

I dont follow your point here. If you mean, a document is just as real as a 
dog, I agree. So?  But if you mean, there is no basic difference between a 
document and a dog, I disagree. And so does my cat.

Difference sure, but not necessarily relevant.


Ok, you can squeeze something over the wire
that represents  a novel written by a dog but you (probably) can't
squeeze a dog over, but that's just a limitation of the protocol.

So improved software engineering will enable us to teleport dogs over the 
internet? Come on, you don't actually believe this.

It would save a lot of effort sometimes (walkies!) but all I'm
suggesting is that if, hypothetically, you could teleport matter over
the internet, all you'd be looking at as far as http-range-14 is
concerned is another media type. Working back from there, and given
correspondences as above, a descriptive document can be a valid
representation of the identified resource even if it happens to be an
actual thing, given that there isn't necessary any one true
representation. We don't need the Information Resource distinction
here (useful elsewhere maybe).

Cheers,
Danny.

--
http://danny.ayers.name



IHMC (850)434 8903 or (650)494 3973
40 South Alcaniz St.   (850)202 4416   office
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--

Regards,

Kingsley Idehen 
President  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen








Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

2011-06-13 Thread Christopher Gutteridge
Before I comment, I just want to summarise my understanding because 
http-range-14 is a weird term;


I understand it as the range-14 issue that when you use 302 to redirect 
from a URI-A to a URL-B we have a convention that URL-B has some 
relationship to URI-A but it's not defined, we don't treat this as 
semantic information and tend to throw it away.

(stated to make sure I've understood correctly)

This bit a chap working with some of my data;
* he loaded some data from URI-A using a library
* URI-A did  a nice content-negotiated 302 to URL-B (and RDF document)
* URL-B had a description of URI-A
* The problem was he also wanted to auto extract the license for this 
data, but the triples gave the license as a relation to URL-B, but the 
system treated the data as loaded from URI-A


At the most simple level, we could add some triples when loading a graph 
via redirection...

URI-A myprefix:http302redirect URL-B
or something richer with dates, http options etc.

You could do something even fussier with http headers stating an 
explicit relationship with the 302, but all of this is very nice but the 
main problem seems to be that it's hard and doesn't benefit someone who 
just wants to knock something up quickly.


The real problem seems to me that making resolvable, HTTP URIs for real 
world things was a clever but dirty hack and does not make any semantic
sense. We should use thing://data.totl.net/scooby to refer to the dog 
and have a convention that http://data.totl.net/scooby will refer to 
some content about my dog. This URL can of course then content negotiate 
as normal. You could also use this in reverse. 
*thing*://www.imdb.com/title/tt0910554/ is the primary topic of 
http://www.imdb.com/title/tt0910554/


Yes, you could end up with a whole bunch of URIs for the same thing; 
thing://data.totl.net/scooby thing://data.totl.net/scooby.html 
thing://data.totl.net/scooby.pdf thing://data.totl.net/scooby.csv all 
are the same thing, but big deal.


The only tricky thing would be people may get confused about the thing 
URI related to a document. For example, given a document in pdf, word 
and html, you might need a separate thing:// URI to describe the 
abstract concept of the document, but that's not the primary topic of 
any of the documents. Such fiddling details are more the province of 
people with experience, so I'm not too worried. What we should be doing 
is making the common garden data really easy to produce.


I've spent a lot of time trying to teach these concepts to people at 
hackdays  barcamps, plus in a professional context. http:// URIs for 
real world things clearly make it harder to learn. The follow-you-nose 
gimick is cool, but we could do that with a change convention, and a 
trivial update to existing libraries (just resolve thing:// via http://)


I expect the answer is it's too late to change now. To which I am 
tempted to say change or die.


(again, another Monday morning ranty mail! but I feel like someone 
should be commenting on the emperors URI  convention. If there's a cheat 
sheet I should read before continuing commenting on these subject, 
please point me to it.)


Kingsley Idehen wrote:

On 6/13/11 1:28 AM, Pat Hayes wrote:
But I don't think all this is really germane to the http-range-14 
issue. The point there is, does the URI refer to something like a 
representation (information resource, website, document, RDF graph, 
whatever) or something which definitely canNOT be sent over a wire?


The Referent of a URI re., http-range-14 is the observation (or 
description) subject. In this context the subject may or may not be a 
real world object or entity.


In the context of Linked Data, the observation (or description) 
subject URI resolves to a Representation of its Referent. Actual 
representation is accessible via an Address. Data representation 
formats are *optionally* negotiable e.g., via content negotiation, and 
ultimately varied i.e., many serialization formats for byte stream 
that actually transmits data from its source to its consumers.





--
Christopher Gutteridge -- http://id.ecs.soton.ac.uk/person/1248

You should read the ECS Web Team blog: http://blogs.ecs.soton.ac.uk/webteam/



Re: Squaring the HTTP-range-14 circle

2011-06-13 Thread Richard Cyganiak
On 13 Jun 2011, at 09:59, Christopher Gutteridge wrote:
 The real problem seems to me that making resolvable, HTTP URIs for real world 
 things was a clever but dirty hack and does not make any semantic sense.

Well, you worry about *real-world things*, but even people who just worry about 
*documents* have said for two decades that the web is broken because it 
conflates names and addresses. And they keep proposing things like URNs and 
info: URIs and tag: URIs and XRIs and DOIs to fix that and to separate the 
naming concern from the address concern. And invariably, these things fizzle 
around in their little niche for a while and then mostly die, because this 
aspect that you call a “clever but dirty hack” is just SO INCREDIBLY USEFUL. 
And being useful trumps making semantic sense.

HTTP has been successfully conflating names and addresses since 1989.

There is a trillion web pages out there, all named with URIs. And even if just 
0.1% of these pages are unambiguously about a single specific thing, that gives 
us a billion free identifiers for real-world entities, all already equipped 
with rich *human-readable* representations, and already linked and 
interconnected with *human-readable*, untyped, @href links.

And these one billion URIs are plain old http:// URIs. They don't have a 
thing:// in the beginning, nor a tdb://, nor a #this or #that in the end, nor 
do they respond with 303 redirects or to MGET requests or whatever other nutty 
proposals we have come up with over the years to disambiguate between page and 
topic. They are plain old http:// URIs. A billion.

Then add to that another huge number that already responds with JSON or XML 
descriptions of some interesting entity, like the one from Facebook that 
Kingsley mentioned today in a parallel thread. Again, no thing:// or tdb:// or 
#this or 303 or MGET on any of them.

I want to use these URIs as identifiers in my data, and I have no intention of 
redirecting through an intermediate blank node just because the TAG fucked up 
some years ago.

I want to tell the publishers of these web pages that they could join the web 
of data just by adding a few @rels to some as, and a few @properties to some 
spans, and a few @typeofs to some divs (or @itemtypes and @itemprops). And 
I don't want to explain to them that they should also change http:// to 
thing:// or tdb:// or add #this or #that or make their stuff respond with 303 
or to MGET requests because you can't squeeze a dog through an HTTP connection.

And here you and Pat and Alan (and TimBL, for that matter) are preaching that 
we can't use this one billion of fantastic free URIs to identify things because 
it wouldn't make semantic sense.

Being useful trumps making semantic sense. The web succeeded *because* it 
conflates name and address. The web of data will succeed *because* it conflates 
a thing and a web page about the thing.

http://richard.cyganiak.de/
a foaf:Document;
dc:title Richard Cyganiak's homepage;
a foaf:Person;
foaf:name Richard Cyganiak;
owl:sameAs http://twitter.com/cygri;
.

There.

If your knowledge representation formalism isn't smart enough to make sense of 
that, then it may just not be quite ready for the web, and you may have some 
work to do.

Best,
Richard


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