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Re: AW: RE : substitute for skos:isSubjectOf

From: Dan Brickley <danbri@danbri.org>
Date: Fri, 23 Jan 2009 15:55:13 +0100
Message-ID: <4979DA51.6060509@danbri.org>
To: Neubert Joachim <J.Neubert@zbw.eu>
Cc: Antoine Isaac <Antoine.Isaac@KB.nl>, "Houghton,Andrew" <houghtoa@oclc.org>, public-esw-thes@w3.org

On 23/1/09 15:39, Neubert Joachim wrote:
> Hi Antoine,
> I agree with you that it's perfectly possible to query a SPARQL server
> either way round. In a closed world, there would be no problem. But the
> usage I want to encourage is the "follow-your-nose" principle Ed Summers
> described for the web of open linked data. This modus operandi makes
> heavy use of the fact that RDF forms a directed graph. Navigation
> through this graph in a straightforward way is possible only in the
> direction given by the existing triples. And with dc:subject (or any
> other relation that puts the concept in the object position), it is the
> wrong direction. So, when you are at the node of the concept, you come
> to nowhere without having the inverse relation materialized. - I hope
> this may explain my stubbornness about this issue ...

With respect, I suspect this mixes up the graph of nodes/relations 
encoded in an RDF document with the graph of document/link relations in 
the Web. "Follow your nose" in this context w.r.t. RDF and linked data 
means, as I understand it, that unknown URIs can be de-referenced to 
learn how to interpret them. This is regardless of whether they appear 
in statement.

eg. in 
where Ed says "One of the benefits of linking data in this way is the 
“follow your nose” effect." he gives the example of a URI for the 
predicate of a statement (dc:creator).

I think the original use of the term was here,
http://lists.w3.org/Archives/Public/www-webont-wg/2002Oct/0162.html ... 
and mostly talking about dealing with unknown media types by going 
through the mime registry, etc., especially when the format is RDF: 
"...in order that the poor sap can follow his nose thru g:wife
to <geneology-terms>". See also http://esw.w3.org/topic/FollowYourNose


Received on Friday, 23 January 2009 14:55:55 UTC

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