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

From: Patrick Stickler <patrick.stickler@nokia.com>
Date: Mon, 25 Nov 2002 15:58:12 +0200
Message-ID: <014901c2948a$b1a47ce0$4b9316ac@NOE.Nokia.com>
To: "ext Nikita Ogievetsky" <nogievet@cogx.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>



[Patrick Stickler, Nokia/Finland, (+358 40) 801 9690, patrick.stickler@nokia.com]


----- Original Message ----- 
From: "ext Nikita Ogievetsky" <nogievet@cogx.com>
To: "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>
Sent: 25 November, 2002 15:39
Subject: Re: a URI is a name (tel uri scheme and VCARD RDF)


> 
> 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>

Eh?

Patrick
Received on Monday, 25 November 2002 08:58:18 GMT

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