RE: Astounding silence about same-ness Re: Concept Equivalence, IFPs, skos:subjectIndicator and owl:sameAs

Hello Lars (and Bernard)

FWIW I'm much happier now that I've spotted the blank node I'd
previously missed in the SKOS Guide example Published Subject
Indicators.

<rdf:RDF
  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
  xmlns:skos="http://www.w3.org/2004/02/skos/core#"
  xmlns:foaf="http://xmlns.com/foaf/0.1/">
  
  <foaf:Document
rdf:about="http://www.publish.csiro.au/paper/MU00039.htm">
    <skos:primarySubject rdf:parseType="Resource">
      <skos:subjectIndicator
rdf:resource="http://www.example.com/psi/ornithology.html"/>
    </skos:primarySubject>
  </foaf:Document>
  
</rdf:RDF>

I would have seen it more quickly with N3 and/or a diagram

(sans ns decls)
<http://www.publish.csiro.au/paper/MU00039.htm>
	a	foaf:Document;
	skos:primarySubject	
		[skos:subjectIndicator
<http://www.example.com/psi/ornithology.html>];
	.

Thanks,

Stuart
--

> -----Original Message-----
> From: public-esw-thes-request@w3.org 
> [mailto:public-esw-thes-request@w3.org] On Behalf Of Lars 
> Marius Garshol
> Sent: 10 November 2006 07:59
> To: public-esw-thes@w3.org
> Subject: Re: Astounding silence about same-ness Re: Concept 
> Equivalence, IFPs, skos:subjectIndicator and owl:sameAs
> 
> 
> 
> * Williams, Stuart
> >
> > Ok... so, the relationship between a topic and a subject is 
> functional
> > and:  1) direct in the case where the subject is a directly web 
> > accessible resource; 2) indirect via a subject indicator 
> which has an 
> > inverse functional relation with the subject, in the case where the 
> > subject is not a directly accessible web resource. FWIW 
> subjects that 
> > are web accessible resources could also be indicated indirectly.
> 
> All correct.
> 
> > If that is correct, then a 'problem' with skos:subjectIndicator is 
> > that as it is currently framed is that it relates a skos:Concept (a 
> > tm:Topic like thing as you seem to concur below) directly 
> to a subject 
> > indicator without an intervening tm:Subject.
> 
> The skos:Concept and the tm:Subject are the same thing. In fact,
> 
>    tm:Subject owl:sameAs rdf:Resource
>    skos:Concept rdfs:subclassOf tm:Subject
> 
> To put it another way, the subject is the thing you are 
> representing in your RDF model.
> 
> --Lars M.
> 
> 
> 
>

Received on Friday, 10 November 2006 17:48:15 UTC