Re: [Wikidata-l] Subclass of/instance of

2014-05-27 Thread David Cuenca
On Thu, May 15, 2014 at 5:03 PM, Markus Krötzsch mar...@semantic-mediawiki.org wrote: I applaud your comparison of inferencing with a form of decompression. I think this is a nice intuition (in fact, some people have researched semantic compression where one tries to reduce the size of a

Re: [Wikidata-l] Subclass of/instance of

2014-05-15 Thread Markus Krötzsch
On 14/05/14 19:33, Joe Filceolaire wrote: Except that there are lots of people who have appeared in one movie who don't consider themselves actors and should not have the 'occupation=actor/actress'. There are good reasons for some constraints to be gadgets that can be overridden rather than hard

Re: [Wikidata-l] Subclass of/instance of

2014-05-14 Thread Markus Krötzsch
Hi Eric, Thanks for all the information. This was very helpful. I only get to answer now since we have been quite busy building RDF exports for Wikidata (and writing a paper about it). I will soon announce this here (we still need to fix a few details). You were asking about using these

Re: [Wikidata-l] Subclass of/instance of

2014-05-14 Thread Joe Filceolaire
Except that there are lots of people who have appeared in one movie who don't consider themselves actors and should not have the 'occupation=actor/actress'. There are good reasons for some constraints to be gadgets that can be overridden rather than hard coded semantic limits. I do think we

[Wikidata-l] Subclass of/instance of

2014-05-05 Thread Markus Kroetzsch
Hi, I got interested in subclass of (P279) and instance of (P31) statements recently. I was surprised by two things: (1) There are quite a lot of subclass of statements: tenth of thousands. (2) Many of them make a lot of sense, and (in particular) are not (obvious) copies of Wikipedia

Re: [Wikidata-l] Subclass of/instance of

2014-05-05 Thread emw
Hi Markus, You asked who is creating all these [subclass of] statements and how is this done? The class hierarchy in http://tools.wmflabs.org/wikidata-todo/tree.html?q=Q35120rp=279lang=enshows a few relatively large subclass trees for specialist domains, including molecular biology and