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Re: "Resource" (RDF vocabulary definitions)

From: Seth Russell <seth@robustai.net>
Date: Tue, 26 Nov 2002 10:12:30 -0800
Message-ID: <3DE3B98E.8000206@robustai.net>
To: Chris Catton <chris.catton@btopenworld.com>
CC: Brian McBride <bwm@hplb.hpl.hp.com>, www-rdf-comments <www-rdf-comments@w3.org>

Chris Catton wrote:

>I may be losing the plot now, but I still think this is a circular argument.
>Summarising what's gone so far ...
>
><http://example.org/somepage#MotorVehicle> from an rdf document refers to an
>rdf resource.
>
Actually I dont think there are resources distinguished from "rdf 
resources",  rather there are resources and RDF can talk about them.

>So if I want to talk about the text on a web page I must define the URI:
>
>   http://example.org/somepage#MotorVehicle
>
>to mean the HTML fragment ...
>
>
>But I can't do this, because when I try and define it, I automatically refer
>to the resource and not the fragment
>
Well if you define it as an HTML fragment, then the resource *is* the 
fragment.  If you define it as a class of motor vehicles, then that is 
the resource.  See the mentograph [1].

[1] http://robustai.net/mentography/rdf_fragments.jpg

Of coure you can't do both things at the same time from the same server. 
 I believe there must be only one http://foo document with media type 
application/rdf+xml at any given time  ... right?  

I've always though that mentography would be useful to clarify RDF ... I 
think this is an good example.  
More about mentography at
[2] http://robustai.net/mentography/mentography.html

Seth Russell
http://radio.weblogs.com/0113759/
Received on Tuesday, 26 November 2002 13:13:06 GMT

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