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[TF-Ent] RIF Core Entailment section

From: Chimezie Ogbuji <ogbujic@ccf.org>
Date: Sat, 06 Mar 2010 21:32:34 -0500
To: "SPARQL Working Group WG" <public-rdf-dawg@w3.org>
cc: "Birte Glimm" <birte.glimm@comlab.ox.ac.uk>, "Ivan Herman" <ivan@w3.org>, "Axel Polleres" <axel.polleres@deri.org>, "Sandro Hawke" <sandro@w3.org>
Message-ID: <C7B87A72.10310%ogbujic@ccf.org>
http://www.w3.org/2009/sparql/docs/entailment/gen.html#id21744432

It has been fleshed out and I have added various references.  There are a
few editorial notes involving the following issues:

- the 8th condition (C8) of a common-RIF-RDF-interpretation includes the
set-theoretic semantics of rdfs:subClassOf that are also used by the RDFS
Entailment regime
- Embedding a subset of RIF-OWL combinations (OWL 2 RL for instance) as
extensions to this entailment regime (issues of consistency checking,
axiomatic triples and rules)

Are there examples of RIF Core (normatively) safe rulesets / documents that
use builtins that do not introduce new values into the domain that are
useful as arguments against the finite restrictions? I started by looking at
the extant N3 Logic / CWM builtins but none of them jumped out at me except
the obvious log:semantics, etc.

A mapping from all the SPARQL builtins to corresponding RIF builtins (beyond
those in the RIF Datatypes and Built-Ins document) could further close the
expressive gap between RIF Core and SPARQL.  I think they would all be safe
(and maybe also strongly safe).

----------------------
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 Sunday, 7 March 2010 02:33:21 GMT

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