Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-07 Thread David Cuenca
Property proposal started as:
https://www.wikidata.org/wiki/Wikidata:Property_proposal/Generic#statement_disputed_by

I guess all additional parameters (page, chapter, etc) can go in the
references section.

We will be able to say things like:
birthfollowed bybaptism
---time span until next event 1-7 days
---disputed by GerardM

What about the uncertainty qualifier? What would be a good name? statement
considered uncertain by?

Thanks,
Micru


On Tue, May 6, 2014 at 5:26 PM, Gerard Meijssen
gerard.meijs...@gmail.comwrote:

 Hoi,
 In the Netherlands it used to be that people were baptised as soon as
 possible after birth. The notion that he must have been born a few days
 earlier is not necessarily correct.
  Thanks,
  GerardM


 On 6 May 2014 17:18, Joe Filceolaire filceola...@gmail.com wrote:

 Having a property with multiple values can mean a number of things:
 * All the values are equally valid e.g. because a work has multiple
 authors
 * All values are valid but one is preferred - usually the current value
 e.g. when we have population figures back over time or all the kings of
 Denmark.
 * One of the values is shown because it is widely used but is deprecated
 because it is wrong e.g. Beethoven born on 17 December 1770 (that his date
 of baptism so he must have been born a few days earlier).

 The case described by Freidrich where we have two (or more values) which
 are both disputed (because they can't both be right) although one value is
 more widely supported then this is harder to represent semantically. I
 would go with adding a 'disputed by' qualifier to BOTH claims and marking
 the more widely accepted value as 'rank:preferred'

 But that is just me

 Joe

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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-06 Thread Thomas Douillard
We could create a new qualifier like ''contradicted by'' or ''disputed
by''. The sourcs are a problem though as we can source only the totality of
a claim, not only a qualifier of this claim, so we would have to source all
the sources for the claim and it's disputation sources in the source
without order..


2014-05-05 18:26 GMT+02:00 P. Blissenbach pu...@web.de:

  David Cuenca dacu...@gmail.com writes:

  Jane, this info is in Wikipedia. For instance see:
  https://en.wikipedia.org/wiki/Waltzes_(Chopin)

  N. 17 was attributed to Chopin (Kobylańska and others),
  Chomiński says that claim is spurious. And that is just
  one of many examples.
  According to Wikidata principles we should collect both
  statements and let the reader decide which source to believe.
  I can enter Kobylańska's claim, but I have no way to enter
  Chomiński's counter-claim.

  I think it is important to be able to model that information
  because that is how sources act, they don't limit themselves
  to make certain claims, they also make uncertain claims
  or counter other claims (even if they don't offer better ones).

 Since attributions in arts, history, composition and many other
 field are uncertain, doubtful, questioned, or contradicted
 without an alternative at significant rates - in the
 10% magnitude if you go back in time a bit - we ought to have
 them.

 Contradictions are indeed a new type of statement, because they
 have to refer to the staements they disclaim.

 Purodha

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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-06 Thread David Cuenca
On Tue, May 6, 2014 at 1:37 PM, Thomas Douillard thomas.douill...@gmail.com
 wrote:

 We could create a new qualifier like ''contradicted by'' or ''disputed
 by''. The sourcs are a problem though as we can source only the totality of
 a claim, not only a qualifier of this claim, so we would have to source all
 the sources for the claim and it's disputation sources in the source
 without order..


I have mixed feelings about that... it is good because it doesn't require
any development, it isn't that good because it mixes claim and source...
And having a reference rank to indicate if the source is supporting,
against or unsure about the claim seems too much work for the number of
times that such feature would be needed

Thanks,
Micru
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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-06 Thread Friedrich Röhrs
Hi,

These sort of things could also be modeled with another statement and
opposite properties.

If there is one Statement with the claim Chopin -- creator_of -- Nr. 17
with multiple source (Kobylańska and others), another statement with the
claim Chopin -- not_creator_of -- Nr. 17 with a source (Chomińsk) can be
added.

I dont know if this sort of properties is wanted though.


On Tue, May 6, 2014 at 2:06 PM, David Cuenca dacu...@gmail.com wrote:

 On Tue, May 6, 2014 at 1:37 PM, Thomas Douillard 
 thomas.douill...@gmail.com wrote:

 We could create a new qualifier like ''contradicted by'' or ''disputed
 by''. The sourcs are a problem though as we can source only the totality of
 a claim, not only a qualifier of this claim, so we would have to source all
 the sources for the claim and it's disputation sources in the source
 without order..


 I have mixed feelings about that... it is good because it doesn't require
 any development, it isn't that good because it mixes claim and source...
 And having a reference rank to indicate if the source is supporting,
 against or unsure about the claim seems too much work for the number of
 times that such feature would be needed

 Thanks,
 Micru

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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-06 Thread Gerard Meijssen
Hoi,
In the Netherlands it used to be that people were baptised as soon as
possible after birth. The notion that he must have been born a few days
earlier is not necessarily correct.
Thanks,
 GerardM


On 6 May 2014 17:18, Joe Filceolaire filceola...@gmail.com wrote:

 Having a property with multiple values can mean a number of things:
 * All the values are equally valid e.g. because a work has multiple authors
 * All values are valid but one is preferred - usually the current value
 e.g. when we have population figures back over time or all the kings of
 Denmark.
 * One of the values is shown because it is widely used but is deprecated
 because it is wrong e.g. Beethoven born on 17 December 1770 (that his date
 of baptism so he must have been born a few days earlier).

 The case described by Freidrich where we have two (or more values) which
 are both disputed (because they can't both be right) although one value is
 more widely supported then this is harder to represent semantically. I
 would go with adding a 'disputed by' qualifier to BOTH claims and marking
 the more widely accepted value as 'rank:preferred'

 But that is just me

 Joe

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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-06 Thread Thomas Douillard
One alternative would be
XX author *unknow value* with the disputer as a source.

To express uncertainty we could also use a statement which says the author
is *one of *the french painter in the years 1500 minus Leonardo, and
create the appropriate class, although we do not have all the expressive
power right now to say that. Basic set operation like set union or set
complement in another set
or disjoint with could be good for that by the way (unfortunaltely
disjoint with has not really been well accepted by community).


2014-05-06 17:18 GMT+02:00 Joe Filceolaire filceola...@gmail.com:

 Having a property with multiple values can mean a number of things:
 * All the values are equally valid e.g. because a work has multiple authors
 * All values are valid but one is preferred - usually the current value
 e.g. when we have population figures back over time or all the kings of
 Denmark.
 * One of the values is shown because it is widely used but is deprecated
 because it is wrong e.g. Beethoven born on 17 December 1770 (that his date
 of baptism so he must have been born a few days earlier).

 The case described by Freidrich where we have two (or more values) which
 are both disputed (because they can't both be right) although one value is
 more widely supported then this is harder to represent semantically. I
 would go with adding a 'disputed by' qualifier to BOTH claims and marking
 the more widely accepted value as 'rank:preferred'

 But that is just me

 Joe

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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-05 Thread Jane Darnell
David,
I assume you are referring to books. The same is true for works of
art. The reason why these statements are still valuable is because it
is an attribution based on grounds determined by someone somewhere and
based on that loose statement alone are therefore considered of
interest. You basically make a decision to include the statement or
not, as you see fit.

When it comes to people, one source may say Pete was the son of
Klaus, while another source says Pete was the younger brother of
Klaus. I think it's just a question of picking one on Wikidata to
keep the family aspect of the relationship (whichever it is) intact,
and sooner or later one or the other will be chosen. It's a wiki after
all.
Jane



2014-05-05 11:24 GMT+02:00, David Cuenca dacu...@gmail.com:
 Hi,

 I'm having some cases where a work has been attributed to an author by a
 source, but the source itself says this attribution is dubious, or it is
 contesting a previous attributions as spurious.

 As I see it, the rank of the statement is not deprecated (in fact it is
 normal or even preferred), but I have no way of representing this
 claim uncertainty or claim rebuttal.

 Is there any hidden parameter for this or should it be addressed with a
 qualifier?

 Cheers,
 Micru


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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-05 Thread David Cuenca
Hi Jane,

No, I was not referring to books in particular, but of course it could be
applied to books as well, and to works of art, and to many things in
general.
I agree that the statement is valuable and that it should be included, but
I don't know how to represent it.

Following your examples, what I am trying to represent is not what you say,
but instead:
a) uncertainty: it is hinted that Pete was the son of Klaus, but I have no
conclusive proof
b) rebuttal: Source A says that Pete was the younger brother of Klaus, I
can disprove that (but I cannot provide an alternative)

Cheers,
Micru


On Mon, May 5, 2014 at 2:10 PM, Jane Darnell jane...@gmail.com wrote:

 David,
 I assume you are referring to books. The same is true for works of
 art. The reason why these statements are still valuable is because it
 is an attribution based on grounds determined by someone somewhere and
 based on that loose statement alone are therefore considered of
 interest. You basically make a decision to include the statement or
 not, as you see fit.

 When it comes to people, one source may say Pete was the son of
 Klaus, while another source says Pete was the younger brother of
 Klaus. I think it's just a question of picking one on Wikidata to
 keep the family aspect of the relationship (whichever it is) intact,
 and sooner or later one or the other will be chosen. It's a wiki after
 all.
 Jane



 2014-05-05 11:24 GMT+02:00, David Cuenca dacu...@gmail.com:
  Hi,
 
  I'm having some cases where a work has been attributed to an author by a
  source, but the source itself says this attribution is dubious, or it
 is
  contesting a previous attributions as spurious.
 
  As I see it, the rank of the statement is not deprecated (in fact it is
  normal or even preferred), but I have no way of representing this
  claim uncertainty or claim rebuttal.
 
  Is there any hidden parameter for this or should it be addressed with a
  qualifier?
 
  Cheers,
  Micru
 

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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-05 Thread Jane Darnell
Hmm, I guess I am still not getting it - both of your examples
wouldn't make it into one of my Wikipedia articles, and I would
probably remove them from an existing article if I was working on it.
If it's not factual enough for Wikipedia, then it's not factual enough
for Wikidata.

I recall a situation where painter A was documented as a pupil of
painter B who according to the sources died when painter A was just a
young boy of 8. Either very young children could become pupils of
other painters, or the original document got painter B mixed up with
someone else. Either way it is highly doubtful that painter A was
strongly influenced professionally by the art of B. I would probably
include this info on Wikipedia but would not bother to include it on
Wikidata.

2014-05-05 14:46 GMT+02:00, David Cuenca dacu...@gmail.com:
 Hi Jane,

 No, I was not referring to books in particular, but of course it could be
 applied to books as well, and to works of art, and to many things in
 general.
 I agree that the statement is valuable and that it should be included, but
 I don't know how to represent it.

 Following your examples, what I am trying to represent is not what you say,
 but instead:
 a) uncertainty: it is hinted that Pete was the son of Klaus, but I have no
 conclusive proof
 b) rebuttal: Source A says that Pete was the younger brother of Klaus, I
 can disprove that (but I cannot provide an alternative)

 Cheers,
 Micru


 On Mon, May 5, 2014 at 2:10 PM, Jane Darnell jane...@gmail.com wrote:

 David,
 I assume you are referring to books. The same is true for works of
 art. The reason why these statements are still valuable is because it
 is an attribution based on grounds determined by someone somewhere and
 based on that loose statement alone are therefore considered of
 interest. You basically make a decision to include the statement or
 not, as you see fit.

 When it comes to people, one source may say Pete was the son of
 Klaus, while another source says Pete was the younger brother of
 Klaus. I think it's just a question of picking one on Wikidata to
 keep the family aspect of the relationship (whichever it is) intact,
 and sooner or later one or the other will be chosen. It's a wiki after
 all.
 Jane



 2014-05-05 11:24 GMT+02:00, David Cuenca dacu...@gmail.com:
  Hi,
 
  I'm having some cases where a work has been attributed to an author by
  a
  source, but the source itself says this attribution is dubious, or it
 is
  contesting a previous attributions as spurious.
 
  As I see it, the rank of the statement is not deprecated (in fact it is
  normal or even preferred), but I have no way of representing this
  claim uncertainty or claim rebuttal.
 
  Is there any hidden parameter for this or should it be addressed with a
  qualifier?
 
  Cheers,
  Micru
 

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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-05 Thread Jane Darnell
Well in the case of attributions of artworks, these things tend to go
back and forth a lot, so museums take a fairly pragmatic approach when
they invent a pseudo-artist. They will attribute something like a
previously attributed B to school of B or follower of B and sort
it as B for all other intents and purposes. In the creator field of
the artwork template on Commons we have the after qualification,
which softens the attribution quite a bit - are you looking for
something like that?

2014-05-05 15:43 GMT+02:00, David Cuenca dacu...@gmail.com:
 Jane, this info is in Wikipedia. For instance see:
 https://en.wikipedia.org/wiki/Waltzes_(Chopin)

 N. 17 was attributed to Chopin (Kobylańska and others), Chomiński says that
 claim is spurious. And that is just one of many examples.
 According to Wikidata principles we should collect both statements and let
 the reader decide which source to believe.
 I can enter Kobylańska's claim, but I have no way to enter Chomiński's
 counter-claim.

 I think it is important to be able to model that information because that
 is how sources act, they don't limit themselves to make certain claims,
 they also make uncertain claims or counter other claims (even if they
 don't offer better ones).




 On Mon, May 5, 2014 at 3:18 PM, Jane Darnell jane...@gmail.com wrote:

 Hmm, I guess I am still not getting it - both of your examples
 wouldn't make it into one of my Wikipedia articles, and I would
 probably remove them from an existing article if I was working on it.
 If it's not factual enough for Wikipedia, then it's not factual enough
 for Wikidata.

 I recall a situation where painter A was documented as a pupil of
 painter B who according to the sources died when painter A was just a
 young boy of 8. Either very young children could become pupils of
 other painters, or the original document got painter B mixed up with
 someone else. Either way it is highly doubtful that painter A was
 strongly influenced professionally by the art of B. I would probably
 include this info on Wikipedia but would not bother to include it on
 Wikidata.

 2014-05-05 14:46 GMT+02:00, David Cuenca dacu...@gmail.com:
  Hi Jane,
 
  No, I was not referring to books in particular, but of course it could
  be
  applied to books as well, and to works of art, and to many things in
  general.
  I agree that the statement is valuable and that it should be included,
 but
  I don't know how to represent it.
 
  Following your examples, what I am trying to represent is not what you
 say,
  but instead:
  a) uncertainty: it is hinted that Pete was the son of Klaus, but I
  have
 no
  conclusive proof
  b) rebuttal: Source A says that Pete was the younger brother of Klaus,
  I
  can disprove that (but I cannot provide an alternative)
 
  Cheers,
  Micru
 
 
  On Mon, May 5, 2014 at 2:10 PM, Jane Darnell jane...@gmail.com wrote:
 
  David,
  I assume you are referring to books. The same is true for works of
  art. The reason why these statements are still valuable is because it
  is an attribution based on grounds determined by someone somewhere and
  based on that loose statement alone are therefore considered of
  interest. You basically make a decision to include the statement or
  not, as you see fit.
 
  When it comes to people, one source may say Pete was the son of
  Klaus, while another source says Pete was the younger brother of
  Klaus. I think it's just a question of picking one on Wikidata to
  keep the family aspect of the relationship (whichever it is) intact,
  and sooner or later one or the other will be chosen. It's a wiki after
  all.
  Jane
 
 
 
  2014-05-05 11:24 GMT+02:00, David Cuenca dacu...@gmail.com:
   Hi,
  
   I'm having some cases where a work has been attributed to an author
   by
   a
   source, but the source itself says this attribution is dubious, or
 it
  is
   contesting a previous attributions as spurious.
  
   As I see it, the rank of the statement is not deprecated (in fact it
 is
   normal or even preferred), but I have no way of representing
   this
   claim uncertainty or claim rebuttal.
  
   Is there any hidden parameter for this or should it be addressed
   with
 a
   qualifier?
  
   Cheers,
   Micru
  
 
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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-05 Thread Joe Filceolaire
Mark it deprecated and include a quotation (It's a string property) about
how dubious it is in the source statements.

Joe


On Mon, May 5, 2014 at 3:42 PM, Jane Darnell jane...@gmail.com wrote:

 Well in the case of attributions of artworks, these things tend to go
 back and forth a lot, so museums take a fairly pragmatic approach when
 they invent a pseudo-artist. They will attribute something like a
 previously attributed B to school of B or follower of B and sort
 it as B for all other intents and purposes. In the creator field of
 the artwork template on Commons we have the after qualification,
 which softens the attribution quite a bit - are you looking for
 something like that?

 2014-05-05 15:43 GMT+02:00, David Cuenca dacu...@gmail.com:
  Jane, this info is in Wikipedia. For instance see:
  https://en.wikipedia.org/wiki/Waltzes_(Chopin)
 
  N. 17 was attributed to Chopin (Kobylańska and others), Chomiński says
 that
  claim is spurious. And that is just one of many examples.
  According to Wikidata principles we should collect both statements and
 let
  the reader decide which source to believe.
  I can enter Kobylańska's claim, but I have no way to enter Chomiński's
  counter-claim.
 
  I think it is important to be able to model that information because that
  is how sources act, they don't limit themselves to make certain claims,
  they also make uncertain claims or counter other claims (even if they
  don't offer better ones).
 
 
 
 
  On Mon, May 5, 2014 at 3:18 PM, Jane Darnell jane...@gmail.com wrote:
 
  Hmm, I guess I am still not getting it - both of your examples
  wouldn't make it into one of my Wikipedia articles, and I would
  probably remove them from an existing article if I was working on it.
  If it's not factual enough for Wikipedia, then it's not factual enough
  for Wikidata.
 
  I recall a situation where painter A was documented as a pupil of
  painter B who according to the sources died when painter A was just a
  young boy of 8. Either very young children could become pupils of
  other painters, or the original document got painter B mixed up with
  someone else. Either way it is highly doubtful that painter A was
  strongly influenced professionally by the art of B. I would probably
  include this info on Wikipedia but would not bother to include it on
  Wikidata.
 
  2014-05-05 14:46 GMT+02:00, David Cuenca dacu...@gmail.com:
   Hi Jane,
  
   No, I was not referring to books in particular, but of course it could
   be
   applied to books as well, and to works of art, and to many things in
   general.
   I agree that the statement is valuable and that it should be included,
  but
   I don't know how to represent it.
  
   Following your examples, what I am trying to represent is not what you
  say,
   but instead:
   a) uncertainty: it is hinted that Pete was the son of Klaus, but I
   have
  no
   conclusive proof
   b) rebuttal: Source A says that Pete was the younger brother of
 Klaus,
   I
   can disprove that (but I cannot provide an alternative)
  
   Cheers,
   Micru
  
  
   On Mon, May 5, 2014 at 2:10 PM, Jane Darnell jane...@gmail.com
 wrote:
  
   David,
   I assume you are referring to books. The same is true for works of
   art. The reason why these statements are still valuable is because it
   is an attribution based on grounds determined by someone somewhere
 and
   based on that loose statement alone are therefore considered of
   interest. You basically make a decision to include the statement or
   not, as you see fit.
  
   When it comes to people, one source may say Pete was the son of
   Klaus, while another source says Pete was the younger brother of
   Klaus. I think it's just a question of picking one on Wikidata to
   keep the family aspect of the relationship (whichever it is) intact,
   and sooner or later one or the other will be chosen. It's a wiki
 after
   all.
   Jane
  
  
  
   2014-05-05 11:24 GMT+02:00, David Cuenca dacu...@gmail.com:
Hi,
   
I'm having some cases where a work has been attributed to an author
by
a
source, but the source itself says this attribution is dubious,
 or
  it
   is
contesting a previous attributions as spurious.
   
As I see it, the rank of the statement is not deprecated (in fact
 it
  is
normal or even preferred), but I have no way of representing
this
claim uncertainty or claim rebuttal.
   
Is there any hidden parameter for this or should it be addressed
with
  a
qualifier?
   
Cheers,
Micru
   
  
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Re: [Wikidata-l] When the source says the information provided is dubious

2014-05-05 Thread P. Blissenbach
 David Cuenca dacu...@gmail.com writes:

 Jane, this info is in Wikipedia. For instance see:
 https://en.wikipedia.org/wiki/Waltzes_(Chopin)
 
 N. 17 was attributed to Chopin (Kobylańska and others),
 Chomiński says that claim is spurious. And that is just
 one of many examples.
 According to Wikidata principles we should collect both
 statements and let the reader decide which source to believe.
 I can enter Kobylańska's claim, but I have no way to enter
 Chomiński's counter-claim.
 
 I think it is important to be able to model that information
 because that is how sources act, they don't limit themselves
 to make certain claims, they also make uncertain claims
 or counter other claims (even if they don't offer better ones).
 
Since attributions in arts, history, composition and many other
field are uncertain, doubtful, questioned, or contradicted
without an alternative at significant rates - in the
10% magnitude if you go back in time a bit - we ought to have
them.

Contradictions are indeed a new type of statement, because they
have to refer to the staements they disclaim.

Purodha

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