On Tue, Aug 19, 2014 at 5:59 PM, Markus Krötzsch < markus@semantic-mediawiki.org> wrote:
I guess it is related, yes. Although currently I am first focussing on efficient query answering -- inference will come after that :-) Whether one stores the results in a database or not is an implementation detail, btw., that is maybe not essential for a user.
Ok, ok, no hurries :-)
Oh, and of course all of this seems to be rather off-topic for the current
subject "Commons Wikibase" :-) All that is relevant there has already been said I guess ("many categories could be expressed by queries to improve results; a gentle, community-led transition will be possible and preferred; categories won't be switched off just because Wikidata is switched on").
Actually I have one last question :) At the moment Gerard is using "is a list of:<value>" on category item pages which has the effect of being the inverse of "instance of". And then he adds further conditions as qualifiers, see: https://www.wikidata.org/wiki/Q6562
While this method of works for simple categories, more complex ones would be hard to model using this method, like https://www.wikidata.org/wiki/Q8380098
I was thinking of modelling it like: <Category:Discoverers of extrasolar planets> is a list of <human> <Category:Discoverers of extrasolar planets> has items used as value of <discoverer>
Of course it would require to have a link between the item "discoverer" and the property "discoverer", but would that make sense?
Thanks, Micru