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Re: [TF-ENT] RDFS entailment regime proposal

From: Chimezie Ogbuji <ogbujic@ccf.org>
Date: Sat, 26 Sep 2009 09:26:24 -0400
To: "Birte Glimm" <birte.glimm@comlab.ox.ac.uk>, "SPARQL Working Group" <public-rdf-dawg@w3.org>
Message-ID: <C6E38EC0.CABB%ogbujic@ccf.org>
Regarding RIF.

On 9/24/09 1:30 PM, "Birte Glimm" <birte.glimm@comlab.ox.ac.uk> wrote:
> Ignore the OWL part for now. It is not at all finished and will
> certainly change! Axel, can you check whether that would work with
> what you have in mind for RIF? My RIF knowledge is far too limited to
> judge that :-(

"A pattern instance mapping P for .. some RIF common model entailment
relationship .. "

" possible solution for BGP from G under .. some RIF common model entailment
relationship .."

For example, RDFS-entails (rif-rdf-owl/#def-rdfs-entails) *should* coincide
with entailment regime used for RDFS.

I'm not sure if the restriction on appearances in signatures breaks this.

Generally, the semantics of RIF/RDF/OWL combination give entailment
relationships (and their corresponding well-formedness restrictions) that
can be used as is in this framework.

The guarantee of a finite set of answers is the main driver of the
constraints regarding SPARQL extensions for entailment regimes.  The
"strongly safe rule sets" restrictions on producers of RIF Core meet this
condition for extensions to SPARQL.  So, a SPARQL extension for RIF Core
entailment should be a simple addition to this framework
 
----------------------
Chime (chee-meh) Ogbuji (oh-bu-gee)
Heart and Vascular Institute (Clinical Investigations)
Architect / Informatician
Cleveland Clinic (ogbujic@ccf.org)
Ph.D. Student Case Western Reserve University
(chimezie.thomas-ogbuji@case.edu)


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Received on Saturday, 26 September 2009 13:27:52 GMT

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