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Re: [closed] pfps-08

From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
Date: Thu, 29 May 2003 06:15:29 -0400 (EDT)
Message-Id: <20030529.061529.108707729.pfps@research.bell-labs.com>
To: phayes@ai.uwf.edu
Cc: www-rdf-comments@w3.org

From: pat hayes <phayes@ai.uwf.edu>
Subject: Re: [closed] pfps-08
Date: Wed, 28 May 2003 22:27:57 -0500

> >From: pat hayes <phayes@ai.uwf.edu>
> >Subject: [closed] pfps-08
> >Date: Wed, 28 May 2003 14:28:44 -0500
> >
> >>  Peter,
> >>
> >>  Re. your comment
> >>  http://lists.w3.org/Archives/Public/www-rdf-comments/2003JanMar/0087.html
> >>  archived as pfps-08 at
> >>  http://www.w3.org/2001/sw/RDFCore/20030123-issues/#pfps-08
> >>
> >>  The WG had earlier rejected this comment; but further to subsequent
> >>  discussions, we have now decided to accept it:
> >>  http://lists.w3.org/Archives/Public/w3c-rdfcore-wg/2003May/0199.html
> >>
> >>  Appropriate modifications have been made to the section on datatypes
> >>  in the semantics document (section 3.4) , see
> >>
> >>  http://www.w3.org/2001/sw/RDFCore/TR/WD-rdf-mt-20030117/#dtype_interp
> >>
> >>  of which the primary ones are that rdf:XMLLiteral is now required to
> >>  be a genuine datatype in all datatyped D-interpretations, and the
> >>  semantic conditions are stated in terms of the datatype itself rather
> >>  than any particular URIref. The text now draws explicit attention to
> >>  this:
> >>
> >>  "The condition does not require that the URIref in the typed literal
> >>  be the same as the associated       URIref of the datatype; this
> >>  allows semantic extensions which can express identity conditions on
> >>  URIrefs to draw appropriate conclusions. "
> >>
> >>  We note that the WG has also decided to disallow language tags in all
> >>  typed literals, including those typed with rdf:XMLLiteral, so that
> >>  this case will follow exactly the same semantic conditions as other
> >>  typed literals and will thereby support full equality reasoning on
> >>  datatypes.
> >>
> >>  Please reply to this message, CCing www-rdf-comments@w3.org, to
> >>  indicate if this decision is acceptable.
> >>
> >>  Pat Hayes
> >
> >I don't understand what is going on here.  You appear to be saying that
> >rdf:XMLLiteral is now a datatype just like all other datatypes (except that
> >it is hard-coded into RDF in terpretations).  However, in Section 3.1 of
> >http://www.w3.org/2001/sw/RDFCore/TR/WD-rdf-mt-20030117/ (dated 18 May
> >2003) I still see wording to the effect that there is special meaning given
> >to language tags for typed literals with datatype rdf:XMLLiteral.  I do not
> >view this as a satisfactory state of affairs.
> 
> Yes, you still see that wording because we are still arguing slightly 
> about the *exact* way that XML literals will be described, and I do 
> not want to rewrite the document more times that I absolutely must. 
> Nevertheless, the decision to remove lang tags from XML typed 
> literals has been taken and will be implemented, as I said in my 
> message.
> 
> If you prefer, we will wait for your response until the relevant 
> edits to the document have been completed. I will send you another 
> message to trigger this issue, with the same subject line.

I much prefer waiting.

> Pat
> 

peter
Received on Thursday, 29 May 2003 06:15:41 GMT

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