Re: [Wikidata-l] classes and qualifiers

2013-11-05 Thread Jane Darnell
Hi TomTOm,
Be careful what you wish for! If this were possible, then if someone changed 
the dates, this could mess up other things. We already have a big job 
untangling mismatched interwiki links, and this would make such mismatches 
possible to the nth degree.
Jane

Sent from my iPad

On Nov 4, 2013, at 6:14 PM, Thomas Douillard thomas.douill...@gmail.com wrote:

  
 Hey, I got an ontology question.
 
 Classes are, in semantic web framework and their foundations like Description 
 Logic, if I'am not wrong, something like a lohic predicate that intensionaly 
 or extentionaly defines the properties of their instances.
 
 They are usually not qualified, but in Wikidata, as of now they are 
 properties like the others, who can also be qualified. 
 
 So the question is : could we use qualifier on classes to add predicates on 
 the class definition ? For example if 
 George Bush is an instance of United States President [from 1980 to 
 1984] (random years), this would mean that the instanciation add some 
 predicates on the other predicates we have on the president of the united 
 states ? 
 
 Just a random thought, I just realise I just qualified the instanciation, not 
 the class itself.
 
 --TomT0m 
 
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Re: [Wikidata-l] classes and qualifiers

2013-11-05 Thread Gerard Meijssen
Hoi,
The good news is that the interwiki tangles are a big improvement over what
we had. Now there is clarity when an interwiki is wrong. There is one place
where to solve it and when solved, it is solved for all linked Wikipedias.

The problem I have with all the ontology issues is that they are relevant
in the context of interconnectivity between systems. This becomes
increasingly irrelevant as we identify the records in other systems.
Irrelevant it is also because we do not use it. Getting data from external
sources is largely frowned upon.

As it is, we are building the data in Wikidata ourselves and comparing
things is an afterthought. Many statements in Wikidata are problematic but
they have the saving grace that with more statements it becomes more clear
what works and what does not. As long as people talk in terms of ontologies
and do not translate it into Reasonator like application it is in my
opinion a waste of breath.
Thanks,
   GerardM

http://ultimategerardm.blogspot.nl/2013/10/abdullah-king-of-saoudi-arabia.html
http://tools.wmflabs.org/reasonator/?q=Q57298


On 6 November 2013 08:24, Jane Darnell jane...@gmail.com wrote:

 Hi TomTOm,
 Be careful what you wish for! If this were possible, then if someone
 changed the dates, this could mess up other things. We already have a big
 job untangling mismatched interwiki links, and this would make such
 mismatches possible to the nth degree.
 Jane

 Sent from my iPad

 On Nov 4, 2013, at 6:14 PM, Thomas Douillard thomas.douill...@gmail.com
 wrote:

 
  Hey, I got an ontology question.
 
  Classes are, in semantic web framework and their foundations like
 Description Logic, if I'am not wrong, something like a lohic predicate that
 intensionaly or extentionaly defines the properties of their instances.
 
  They are usually not qualified, but in Wikidata, as of now they are
 properties like the others, who can also be qualified.
 
  So the question is : could we use qualifier on classes to add predicates
 on the class definition ? For example if
  George Bush is an instance of United States President [from 1980
 to 1984] (random years), this would mean that the instanciation add some
 predicates on the other predicates we have on the president of the united
 states ?
 
  Just a random thought, I just realise I just qualified the
 instanciation, not the class itself.
 
  --TomT0m
 
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