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RE: A summary of the proposal for resolving the issues with rdf:text --> Could you please check it one more time?

From: Boris Motik <boris.motik@comlab.ox.ac.uk>
Date: Mon, 18 May 2009 09:01:33 +0200
To: "'Sandro Hawke'" <sandro@w3.org>
Cc: <public-rdf-text@w3.org>
Message-ID: <D3BE057C8B7F4C31A8B603BDE0A55EEA@wolf>
Hello,

If OWL and RIF need to do any kind of rewriting, this is the business of OWL and
RIF, not of rdf:text. Therefore, I don't think we need to discuss that in the
rdf:text document.

(OWL already contains this requirement; see the section on Literals in the
Syntax document.)

Regards,

	Boris

> -----Original Message-----
> From: Sandro Hawke [mailto:sandro@w3.org]
> Sent: 18 May 2009 06:20
> To: Boris Motik
> Cc: public-rdf-text@w3.org
> Subject: Re: A summary of the proposal for resolving the issues with rdf:text
> --> Could you please check it one more time?
> 
> 
> ...
> 
> > STR("Hello@"^^xs:string)= STR("Hello@"^^rdf:text) = "Hello@"
> > STR("Hello@en")=
> > STR("Hello@en"^^rdf:text)=
> > STR("Hello@en"^^xs:string)= "Hello"@en"
>                      you mean "Hello@en" I assume
> 
> ...
> 
> > As a consequence, I believe that the LC comment of the SPARQL WG
> > should be addressed by simply removing any mention of literal
> > replacement during graph exchange. This makes it clear that rdf:text
> > is just another, regular datatype that is in no way different from the
> > other XML Schema or user-defined datatypes.
> 
> Hmmmm.   Okay, this approach might make sense, yeah.
> 
> I'd think we should at least include a practical, non-normative warning
> that rdf:text is not usuable as a general-purpose replacement for RDF
> plain literals, because RDF systems in general do not implement rdf:text
> D-entailment.
> 
> But more than that, in practice, RIF and OWL systems are going to need
> to rewrite rdf:text terms into plain literals during output, I think, so
> ... don't we need to say that somewhere?
> 
>      -- Sandro
Received on Monday, 18 May 2009 07:03:02 GMT

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