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RE: rdf:text review

From: Seaborne, Andy <andy.seaborne@hp.com>
Date: Tue, 28 Apr 2009 13:05:27 +0000
To: Axel Polleres <axel.polleres@deri.org>
CC: Bijan Parsia <bparsia@cs.man.ac.uk>, 'RDF Data Access Working Group' <public-rdf-dawg@w3.org>
Message-ID: <B6CF1054FDC8B845BF93A6645D19BEA362D1328921@GVW1118EXC.americas.hpqcorp.net>


> -----Original Message-----
> From: Axel Polleres [mailto:axel.polleres@deri.org]
> Sent: 28 April 2009 12:33
> To: Seaborne, Andy
> Cc: Bijan Parsia; 'RDF Data Access Working Group'
> Subject: Re: rdf:text review
...
> =====================================================================
> == Suggested change ==
> 
> Additional semantic equivalences implied by rdf:text should only affect
> D-entailment (where rdf:text is part of the datatype map D following
> [1]). Thus, the document should not talk about "semantic equivalence" in
> general terms but just in terms of D-entailment. This should fix the
> main problem raised and would only affect SPARQL engines that follow a
> (yet to be defined - and thus not affecting forward compatibility)
> D-entailment regime [2].
> =====================================================================
> 
> In my optinion, this also would address the concern on the language tag
> + datatype invariant,

I don't see how that addresses the LANG/STR/DATATYPE issues.  There are concrete examples in the draft - could you say which answers you expect/propose for each case?

The trouble is the SPARQL extension regime applies to BGP matching, not functions where there is not an error in simple entailment.
 
	Andy

> the details of this are probably better discussed
> in a conf. call as suggested above after we sent the comment.
> 
> After short discussion with the co-editors of rdf:text, I have
> implemented a strawman fix of this already on the wiki version of
> rdf:text [3].
> 
> 
> best,
> Axel
> 
> 1. http://www.w3.org/TR/rdf-mt/#dtype_interp

> 2. http://www.w3.org/TR/rdf-sparql-query/#sparqlBGPExtend

> 3.
> http://www.w3.org/2007/OWL/wiki/index.php?title=InternationalizedStringS

> %3E%20pec&diff=22506&oldid=22462
> 
> > Andy
> >
> >> Cheers, Bijan.
> >
> 
> 
> --
> Dr. Axel Polleres
> Digital Enterprise Research Institute, National University of Ireland,
> Galway
> email: axel.polleres@deri.org  url: http://www.polleres.net/

Received on Tuesday, 28 April 2009 13:06:39 GMT

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