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Re: Draft Partitioning

From: Frank Manola <fmanola@mitre.org>
Date: Mon, 18 Jun 2001 16:47:22 -0400
Message-ID: <3B2E68DA.7CB8522F@mitre.org>
To: Aaron Swartz <aswartz@upclink.com>
CC: rdf core <w3c-rdfcore-wg@w3.org>
Aaron-- 

Are you saying that Section 2.2.3 of M&S has to do only with the XML
syntax layer, not the model?  And so the model considers stuff after
we've resolved all these name-like thingies to references to specific
resources?  NB:  the main use for namespaces ("or schemas" he said,
echoing the M&S) cited there seems to be in tieing down the meaning of
*predicates*, rather than arbitrary resources, although other use isn't
precluded.

--Frank

Aaron Swartz wrote:
> 
> On Friday, June 15, 2001, at 08:36  PM, Sergey Melnik wrote:
> 
> > The reason
> > behind it that currently, given a resource, applications cannot
> > determine the namespace of the resource (they can only guess by looking
> > for "#" or last "/"). Several people who used the "RDF API" for
> > implementing editors for RDF Schemas (including Michael Sintek who
> > collaborated on Protege) complained that the API did not offer a way of
> > reliably determining the namespace of a resource.
> 
> Personally, I don't think namespaces are part of the model and
> to add them would really break backwards compatibility. RDF
> talks about individual resources, which need not exist in any
> "namespace" other than the Web itself. Think of this document:
> 
> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns="http://rdf.example.org/#">
>   <rdf:Description>
>     <foo>bar</foo>
>   </rdf:Description>
> </rdf:RDF>
> 
> and
> 
> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns="http://rdf.example.org/#f">
>   <rdf:Description>
>     <oo>bar</oo>
>   </rdf:Description>
> </rdf:RDF>
> 
> These documents are currently equivalent, you seem to propose to
> change this. In the case of Protoge, namespaces are an
> application-specific addition to the model and should remain
> that way.
> 
> --
> [ "Aaron Swartz" ; <mailto:me@aaronsw.com> ; <http://www.aaronsw.com/> ]

-- 
Frank Manola                   The MITRE Corporation
202 Burlington Road, MS A345   Bedford, MA 01730-1420
mailto:fmanola@mitre.org       voice: 781-271-8147   FAX: 781-271-8752
Received on Monday, 18 June 2001 16:48:10 EDT

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