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Re: a URI is a name (tel uri scheme and VCARD RDF)

From: Nikita Ogievetsky <nogievet@cogx.com>
Date: Mon, 25 Nov 2002 19:23:26 -0800
To: "Patrick Stickler" <patrick.stickler@nokia.com>, "Paul Prescod" <paul@prescod.net>, "Richard H. McCullough" <rhm@cdepot.net>, "Alexander Jerusalem" <ajeru@vknn.org>
Cc: "Doug Ransom" <doug.ransom@alumni.uvic.ca>, <www-rdf-interest@w3.org>
Message-ID: <OE69b0ZTt07TrOdlXPe00003962@hotmail.com>

Patric,

Sorry, I do not see how I left out something?
As Alexander noted, there is no semantics in the value of an id attribute.
So an assertion:
<rdf:Description rdf:ID="askdhjgal">
   <rtm:indicatedBy rdf:resource="http://www.w3c.org"/>
</rdf:Description>
is not different from:
<rdf:Description rdf:ID="dfngdfng">
   <rtm:indicatedBy rdf:resource="http://www.w3c.org"/>
</rdf:Description>

Actually, from topic maps point of view in this case subjects of these
two assertions are identical and are subject to merging.

Or may be I had missed your point?

--Nikita

> [Patrick Stickler, Nokia/Finland, (+358 40) 801 9690,
patrick.stickler@nokia.com]
>
>
> > From: "ext Nikita Ogievetsky" <nogievet@cogx.com>
> >
> > Alexander,
> >
> > This is actually one of the axioms of Topic Maps [1].
> > In my RDF Topic Maps attempts [2] I am defining two RTM properties:
> >
> > <daml:UnumbiguousProperty rdf:ID="indicatedBy">
> >  <rdfs:subPropertyOf
> > rdf:resource="http://www.daml.org/2001/03/daml+oil#TransitiveProperty"/>
> >  <rdfs:domain rdf:resource="#topic"/>
> >  <rdfs:range
rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/>
> >  <rdfs:comment>Subject Indicating Resource</rdfs:comment>
> > </daml:UnumbiguousProperty>
> >
> > <daml:UnumbiguousProperty rdf:ID="constitutedBy">
> >  <rdfs:domain rdf:resource="#topic"/>
> >  <rdfs:range
rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/>
> >  <rdfs:comment>Subject Constituting Resource</rdfs:comment>
> > </daml:UnumbiguousProperty>
> >
> > So that I can say in one document:
> >
> > <rdf:Description rdf:ID="w3c">
> >   <rtm:indicatedBy rdf:resource="http://www.w3c.org"/>
> > </rdf:Description>
> > <rdf:Description rdf:ID="w3cwebsite">
> >   <rtm:constitutedBy rdf:resource="http://www.w3c.org"/>
> > </rdf:Description>
>
> The problem here is that you've left out a valid assertion,
> which shows why you can't escape the ambiguity even with
> such specialized properties. I.e.
>
> <rdf:Description rdf:ID="w3cwebsite">
>   <rtm:indicatedBy rdf:resource="http://www.w3c.org"/>
> </rdf:Description>
>
> Even though it is fair to presume that one would not say
>
> <rdf:Description rdf:ID="w3c">
>   <rtm:constitutedBy rdf:resource="http://www.w3c.org"/>
> </rdf:Description>
>


--Nikita.
Received on Monday, 25 November 2002 22:24:02 GMT

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