Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

Hoi, Semantics prove what? Your excercise with pizza has me wonder what you call food. The definition of food as in the French Wikipedia is not an argument for me. My understanding of French is not sufficient and, arguably any language has its own approach. Thanks, GerardM On 18 October 2015

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

2015-10-19 4:44 GMT+02:00 Emw : > This problem is especially acute in chemistry on Wikidata, where chemical > elements use "*instance of *chemical element*" *even though it has been > established that chemical compounds should not use "*instance of* > chemical compound" [ >

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

On 10/18/2015 01:59 PM, Stas Malyshev wrote: > > [Emw] > > Hi! > > > The community-defined meaning of /subclass of/ (P279) is that of > > rdfs:subClassOf [1]. Similarly, the community-defined meaning of > > /instance of/ (P31) is that of rdf:type [2, 3]. > > Are you sure [that] is always

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

Joe... you just HAD to mention FRBR !!! argh let it die, let it die, let it dielololol :) Thad +ThadGuidry ___ Wikidata mailing list Wikidata@lists.wikimedia.org

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

Hi! > Similarly the "Diary of Anne Frank" is an instance of a memoir or a > literary work but is a subclass of book (because there are lots of > physical books with that name). Literary works have authors and > publishers. Books have numbers of pages and printers and physical locations. I'm not

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

Consistency and well foundedness. It's acutally pretty confortable that the basic object we're classyfing are concrete stuffs. The diary of Ann Franck as a Work is more an abstract object. This ensure that we always indeed are trying to class concrete object at the base of the classification

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

Hi Stas, Yes, P31 is always rdf:type and P279 is always rdfs:subClassOf in RDF/OWL exports that use the community interpretation of those properties. If those exports want to be decidable then they'll need to omit claims that use P31 or P279 as qualifiers -- which some of Markus's RDF/OWL

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

Oops, I meant https://www.wikidata.org/wiki/Help:Classification of course. We made the page translatable even if it's not an accepted policy, at least it's well founded and solid. 2015-10-17 17:06 GMT+02:00 Gerard Meijssen : > Hoi, > So in order to understand all this

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

The main problem is that Instance Of is not being used properly sometimes. In general, wrong classifications across Wikidata lead to weird assumptions. Better documentation, and even helper rules to help prevent wrong classifications is what is needed and its forthcoming. Lydia has mentioned

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

Hi Peter, The community-defined meaning of *subclass of* (P279) is that of rdfs:subClassOf [1]. Similarly, the community-defined meaning of *instance of* (P31) is that of rdf:type [2, 3]. There are some open problems with how to handle qualifiers on *instance of* and *subclass of* in RDF/OWL

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

Yes, in the pizza example Emw showed, the definition of "food" is important. If what I ate this morning is a food, then pizza is a subclass of food. This is consistent with the first sentence of https://fr.wikipedia.org/wiki/Nourriture of frwiki. And the fact that "pizza" is an instance of food is

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

I tried this to know whether there was items who are both instance of a subclass of human and intance of human, unfortunately the query timeouts :/

Re: [Wikidata] diseases as classes in Wikidata - was Re: An Ambitious Wikidata Tutorial

You're right, I tend to think having a metaclass for types of deaseases would be useful, really. Please submit your suggestions and correction on https://fr.wikipedia.org/w/index.php?search=Help%3AClassification=Sp%C3%A9cial%3ARecherche=Lire :) There is an opened RfC on adopting such basic