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Re: RDF-ISSUE-11 (Reconciliation of documents): Reconciliation of various, semantics-oriented documents with the core RDF ones [Cleanup tasks]

From: Pat Hayes <phayes@ihmc.us>
Date: Sat, 5 Mar 2011 09:17:28 -0600
Message-Id: <EC624A47-E7E2-4A81-AFF2-F3E75F9E8B04@ihmc.us>
To: RDF Working Group WG <public-rdf-wg@w3.org>

On Mar 5, 2011, at 5:34 AM, RDF Working Group Issue Tracker wrote:

> 
> RDF-ISSUE-11 (Reconciliation of documents): Reconciliation of various, semantics-oriented documents with the core RDF ones [Cleanup tasks]
> 
> http://www.w3.org/2011/rdf-wg/track/issues/11
> 
> Raised by: Ivan Herman
> On product: Cleanup tasks
> 
> Since 2004 a number of W3C documents were published that had an effect (extension) on the "core" RDF semantics but they may have gone unnoticed because spread over. The WG may consider folding these into the core RDF documents at least by reference. These are:
> 
> - RDF Plain Literal[1] added a new datatype into the RDF namespace

I agree we should deal with this is some coherent fashion. This is basically fixing a bug in RDF.

> - POWDER's IRI Set Semantics[2] defines an extension to the core RDF Semantics by defining a "bridge" between URI-s as resources and URI-s as strings

This is simply defining a new datatype and some associated properties. We could incorporate this into 'official' RDF, but is there any real need to do so?

> - SPARQL 1.1's[3] upcoming Entailment Regimes document defines a finite 'sub-semantics' for RDF[4] and RDFS[5]; these are restricted semantics that can be handled with a rule engine in a finite manner.

AFAIKS, the SPARQL regimes do not change the RDF and RDFS semantics at all. They define incomplete but 'sensible' inference schemes for RDF and RDFS, by eliminating various categories of valid but trivial inferences. Which is all very good, but does not change the semantics. 

Pat

> The practical importance of these clearly go beyond SPARQL...
> 
> [1] http://www.w3.org/TR/rdf-plain-literal/
> [2] http://www.w3.org/TR/powder-formal/#regexSemantics
> [3] http://www.w3.org/TR/sparql11-entailment/
> [4] http://www.w3.org/TR/sparql11-entailment/#id35806215
> [5] http://www.w3.org/TR/sparql11-entailment/#id35807668
> 
> 
> 
> 

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Received on Saturday, 5 March 2011 15:19:19 UTC

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