It was Ivan Frade who said at the right time 26.09.2009 09:55 the
following words:
Hi,
On Fri, Sep 25, 2009 at 7:30 PM, Leo Sauermann <[email protected]
<mailto:[email protected]>> wrote:
nao:Tag is for systems that just use NAO/NIE and are fine with
no-brainer solutions.
a nao:Tag has the semantic meaning of : the tag is a string. its
unique.
pimo:Tag is for systems that want to achieve a highlevel
integration of
Addressbooks, Calendars, Websites, etc... into a semantic network.
pimo:Tags are then not only tags, but can be also a pimo:Person - that
is, you can use a person's name to tag something but - surprise -
it is
also a person
Out of curiosity: so "pimo:Tag" is then a generic "link" between two
resources?
nope, uppercase always indicates a class. if you can read N3 (afaik you do):
claudia:Belfast a pimo:City, pimo:Tag.
claudia:MeetingInBelfast a pimo:SocialEvent;
pimo:hasTag claudia:Belfast;
pimo:hasLocation claudia:Belfast.
as you see in this simple example, there is a "transition path" between
dumb tagging and clever semantics - the city can be seen both as a Tag
for the meeting but also as a location. Difference in code is: only the
pimo:hasLocation is authorative enought that the code issues a google
maps plugin to show the location.
today, we live in a world of dumb tags and this is fine,
above example shows how we can get to semantic web in the next years,
without breaking backward compability.
It sounds like we could replace all properties between concepts
(exclusing inheritance) as tags: "music piece belongs to an album"
could be a Tag, Contact sent an email..." another tag, "Contact has
postal address" another tag....
.
now clicking on the person will get more...
a pimo:Tag has the semantic meaning of : the tag is a unique string
which is also a Thing out of the real world which can have more
attributes.
Then it is opening the door to all kind of "custom properties". A
pimo:Tag is like a property between two things that the user can
label... it sounds pretty dangerous.
hm, I think its not.... but I don't understand everything you said....
please read the section on tagging in the spec and ask again:
http://www.semanticdesktop.org/ontologies/2007/11/01/pimo/v1.1/pimo_v1.1.pdf
:-)
best
Leo
Regards,,
Ivan
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Deutsches Forschungszentrum fuer
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Geschaeftsfuehrung:
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Dr. Walter Olthoff
Vorsitzender des Aufsichtsrats:
Prof. Dr. h.c. Hans A. Aukes
Amtsgericht Kaiserslautern, HRB 2313
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