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RE: [closed] williams-01, What is a node in an RDF graph?

From: Williams, Stuart <skw@hplb.hpl.hp.com>
Date: Tue, 6 May 2003 11:53:20 +0100
Message-ID: <5E13A1874524D411A876006008CD059F04A074F3@0-mail-1.hpl.hp.com>
To: "'Graham Klyne'" <gk@ninebynine.org>
Cc: www-rdf-comments@w3.org

Graham,

Apologies for the delay in responding...

I have taken a look at the wording in [1] which appears to be the WGs
resolution referenced from [2] (the full reference to [1] seems absent from
[2]).

The proposal at [1] does address my comment. 

I do have a question about the second paragraph of section 3.1:

 " A URI reference or literal used as a node identifies what that node 
   represents.  A URI reference used as a predicate identifies the 
   relationship between the nodes it connects.  A predicate URI reference
may 
   also be a node in the graph."

Given the first sentence, does a predicate identify a relationship between
the connected graph nodes (which is what the 2nd sentence says), or between
the things that the connected nodes represent?

Thanks

Stuart
--
[1] http://lists.w3.org/Archives/Public/w3c-rdfcore-wg/2003Apr/0199.html
[2] http://lists.w3.org/Archives/Public/w3c-rdfcore-wg/2003Apr/0207.html

> -----Original Message-----
> From: Graham Klyne [mailto:gk@ninebynine.org] 
> Sent: 30 April 2003 09:17
> To: Stuart Williams
> Cc: www-rdf-comments@w3.org
> Subject: [closed] williams-01, What is a node in an RDF graph?
> 
> 
> Stuart,
> 
> With reference to:
>     http://www.w3.org/2001/sw/RDFCore/20030123-issues/#williams-01
> 
> The RDFcore working group have considered your comment:
> 
   http://lists.w3.org/Archives/Public/www-rdf-comments/2003JanMar/0238.html

suggesting that "Nodes in an RDF are ... labelled with a URI Reference 
...".   We recognize that the terminology used has been inconsistent, and 
have resolved:

   http://lists.w3.org/Archives/Public/w3c-rdfcore-wg/2003Apr/0207.html

to revise the terminology consistently in a different way to that you 
suggest, viz. that URI References *are* nodes in an RDF graph, in line with 
the terminology articulated by Pat Hayes [1].

[1] http://lists.w3.org/Archives/Public/w3c-rdfcore-wg/2003Feb/0152.html

(I also note that the description of abstract graph syntax in section 6 of 
Concepts is
already consistent with this terminology.)

Can you please respond to <www-rdf-comments@w3.org> indicating whether this 
response is satisfactory.  Thank you.

#g


-------------------
Graham Klyne
<GK@NineByNine.org>
PGP: 0FAA 69FF C083 000B A2E9  A131 01B9 1C7A DBCA CB5E
Received on Tuesday, 6 May 2003 06:53:46 GMT

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