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Re: model theory for RDF/S

From: Pierre-Antoine CHAMPIN <champin@bat710.univ-lyon1.fr>
Date: 27 Sep 2001 10:56:03 +0200
To: "Peter F. "Patel-Schneider <pfps@research.bell-labs.com>
Cc: phayes@ai.uwf.edu, www-rdf-logic@w3.org
Message-Id: <1001580967.803.1.camel@lisiperso3>
On Thu, 2001-09-27 at 01:04, Peter F. Patel-Schneider wrote:
> > >9/ The model theory for RDFS is missing the requirement that the vocabulary
> > >    contain all the RDFS ``pre-defined'' URIs.
> > 
> > Right. That seemed to not be a model-theoretic matter, to me. The MT 
> > assigns meanings to the triples it finds, but does not impose any 
> > requirements on what triples must be present. But on reflection, it 
> > maybe would be more coherent, and ultimately simpler, to insist that 
> > they be included.
> 
> But RDFS has a base theory which I think should be in all models, so we get
> to the same conclusion, perhaps via different rationales.

Looks sound to me.
Including the RDFS schema in every Schema-closure does not anymore seem
convenient to me, but necessary.

  Pierre-Antoine
Received on Thursday, 27 September 2001 04:53:16 GMT

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