Thanks Jan, I will pursue the badminton discussion on the talk page. On Sat, Jun 15, 2019 at 5:49 PM Jan Ainali <[email protected]> wrote:
> Hello Gabriel, > > I agree with you about the badminton tournaments, that seems odd. It > appears to already be a discussion about that on the talk page of the only > participant in the badminton project: > https://www.wikidata.org/wiki/User_talk:Florentyna#subclass_of:_badminton_tournament > > Perhaps it is best to continue the discussion there? > > /Jan Ainali > http://ainali.com > > > Den lör 15 juni 2019 kl 23:11 skrev Gabriel Altay <[email protected] > >: > >> Hello everyone, >> >> I was playing around with a recent wikidata dump and extracted the items >> that "looked" like classes based on the definition here, >> >> https://www.wikidata.org/wiki/Wikidata:WikiProject_Ontology/Classes >> >> Specifically, an item is a class-item if any of the following are true, >> * the item is the value of a P31 ("instance of") statement >> >> * the item has a P279 ("subclass of") statement (subclass) >> >> * the item is the value of a P279 ("subclass of") statement (superclass) >> >> Once I extracted all items that met these criteria (2,399,621 items >> from wikidata-20190603-all.json.bz2) I started examining the results. One >> of the things I found slightly surprising is that there are about 23k >> badminton events that are classes b/c they have "subclass of >> https://www.wikidata.org/wiki/Q13357858"; statements. SPARQL query >> below. >> >> >> https://query.wikidata.org/#SELECT%20%3Fitem%20%3FitemLabel%20%0AWHERE%20%0A%7B%0A%20%20%3Fitem%20wdt%3AP31%20wd%3AQ57733494.%0A%20%20%3Fitem%20wdt%3AP279%20wd%3AQ13357858.%0A%20%20SERVICE%20wikibase%3Alabel%20%7B%20bd%3AserviceParam%20wikibase%3Alanguage%20%22%5BAUTO_LANGUAGE%5D%2Cen%22.%20%7D%0A%7D >> >> It also looks like there is a badminton project page, >> https://www.wikidata.org/wiki/Category:WikiProject_Badminton >> https://www.wikidata.org/wiki/Wikidata:WikiProject_Badminton/Subclass >> >> >> I'd like to remove these statements as it seems that a particular >> instance of a badminton tournament >> https://www.wikidata.org/wiki/Q121940 >> is not a class. >> >> It seems that this pattern is also in place for about 1,000,000 items >> which are instance of gene (e.g. https://www.wikidata.org/wiki/Q40108). >> >> I had a couple questions for the mailing list, >> >> 1) do folks know if there is an active group working on wikidata ontology >> 2) i've read a few messages about shape expressions. would it be >> worthwhile to setup a shape expression that prevents most items from having >> both "instance of" and "subclass of" statements? >> 3) if these entries are generated by bots, what is the best way to get >> in touch with the owner, their user talk page? >> >> I am probably missing a lot of information about what has been done so >> far in the community, but I'm happy to read anything someone points me >> towards. >> >> best, >> -Gabriel >> _______________________________________________ >> Wikidata mailing list >> [email protected] >> https://lists.wikimedia.org/mailman/listinfo/wikidata >> > _______________________________________________ > Wikidata mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata >
_______________________________________________ Wikidata mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata
