- From: Frank Manola <fmanola@mitre.org>
- Date: Mon, 18 Jun 2001 16:47:22 -0400
- 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 UTC