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RE: How to avoid that collections "break" relationships

From: Markus Lanthaler <markus.lanthaler@gmx.net>
Date: Mon, 31 Mar 2014 20:35:22 +0200
To: <public-hydra@w3.org>, "'Linked Data community'" <public-lod@w3.org>, "'W3C Web Schemas Task Force'" <public-vocabs@w3.org>
Message-ID: <032801cf4d0f$fbf920d0$f3eb6270$@lanthaler@gmx.net>
On Monday, March 31, 2014 7:09 PM, Peter F. Patel-Schneider wrote:
> In actuality, defining things like owl:sameAs is indeed extending RDF.
> Defining things in terms of OWL connectives also goes beyond RDF. This
> is different from introducing domain predicates like foaf:friends.
> (Yes, it is sometimes a bit hard to figure out which side of the line
> one is on.)

Peter, could you please describe where you draw the line? I generally look at RDF as a data model and in those terms nothing that has been suggested really extends RDF. You probably have something related to semantics in mind, please note however that Ruben (please correct me if I'm wrong) didn't suggest to change RDF's semantics, i.e., the triples 

   </people/markus> foaf:knows [
       hydra:memberOf </people/markus/friends>
   ] .

enable no inferences to be made on /people/markus/friends. More specifically, they do not say that the members of /people/markus/friends are related to /people/markus via foaf:knows.

But perhaps you had something completely different in mind!?


--
Markus Lanthaler
@markuslanthaler
Received on Monday, 31 March 2014 18:35:56 UTC

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