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RE: subject indicators ... ?

From: Miles, AJ (Alistair) <A.J.Miles@rl.ac.uk>
Date: Tue, 21 Sep 2004 13:45:31 +0100
Message-ID: <350DC7048372D31197F200902773DF4C05E50C1C@exchange11.rl.ac.uk>
To: 'Bernard Vatant' <bernard.vatant@mondeca.com>, public-esw-thes@w3.org

Hi Bernard,

Thanks alot for your comments, I hoped you would say something on this.

> What do you imagine would be the range of
> skos:SubjectIndicator in that case? Would you leave it open? Or what?
> 

I was imagining to restrict the range of a proposed property
'skos:subjectIndicator' (or just 'skos:indicator' might be better?) to
resources.  So the usage would be e.g. ...

<skos:Concept>
	<skos:prefLabel>bananas</skos:prefLabel>
	<skos:indicator rdf:resource="http://somewhere.org/somedoc.html"/>
</skos:Concept>

> having
> 
> skos:subjectIndicator 	rdf:type	
> owl:InverseFunctionalProperty
> 
> would imply considering the object of skos:subjectIndicator 
> as an Individual
> 
> I'm not sure it's such a good idea.

I may well be missing something here, by why might it be a bad idea?

For comparison, FOAF [1] has an inverse-functional property 'foaf:homepage',
which allows you to uniquely identify e.g. a person, organisation, or
company etc. (i.e. the owner of that homepage).

The rdfs:range of 'foaf:homepage' is the class 'foaf:Document'.  

Cheers,

Alistair.

[1] http://xmlns.com/foaf/0.1/#term_homepage

---
Alistair Miles
Research Associate
CCLRC - Rutherford Appleton Laboratory
Building R1 Room 1.60
Fermi Avenue
Chilton
Didcot
Oxfordshire OX11 0QX
United Kingdom
Email:        a.j.miles@rl.ac.uk
Tel: +44 (0)1235 445440



> -----Original Message-----
> From: Bernard Vatant [mailto:bernard.vatant@mondeca.com]
> Sent: 21 September 2004 07:49
> To: Miles, AJ (Alistair) ; public-esw-thes@w3.org
> Subject: RE: subject indicators ... ?
> 
> 
> 
> Alistair
> 
> A quick remark from the former chair of OASIS PubSubj 
> Committee, who has to bite that bait
> :)
> 
> Though I would of course welcome the introduction of subject 
> indicator in skos vocabulary,
> I've never made up my mind about the relevancy of using 
> owl:InverseFunctionalProperty to
> capture it. Since owl:InverseFunctionalProperty is a subclass 
> of owl:ObjectProperty,
> having
> 
> skos:subjectIndicator 	rdf:type	
> owl:InverseFunctionalProperty
> 
> would imply considering the object of skos:subjectIndicator 
> as an Individual
> 
> I'm not sure it's such a good idea. What do you imagine would 
> be the range of
> skos:SubjectIndicator in that case? Would you leave it open? Or what?
> 
> Cheers
> 
> Bernard
> 
> 
> 
> Bernard Vatant
> Senior Consultant
> Knowledge Engineering
> Mondeca - www.mondeca.com
> bernard.vatant@mondeca.com
> 
> 
> > -----Message d'origine-----
> > De : public-esw-thes-request@w3.org
> > [mailto:public-esw-thes-request@w3.org]De la part de Miles, AJ
> > (Alistair)
> > Envoyé : vendredi 17 septembre 2004 15:05
> > À : 'public-esw-thes@w3.org'
> > Objet : subject indicators ... ?
> >
> >
> >
> > Just to get some response from this community ... do we 
> like the idea of
> > introducing a property e.g. 'skos:subjectIndicator' with domain
> > skos:Concept, and type owl:InverseFunctionalProperty, so 
> that people could
> > use the URL of a web resource defining a concept as a 
> defacto identifier for
> > that concept?  (i.e. support for OASIS pub-sub paradigm).
> >
> > Al.
> >
> > ---
> > Alistair Miles
> > Research Associate
> > CCLRC - Rutherford Appleton Laboratory
> > Building R1 Room 1.60
> > Fermi Avenue
> > Chilton
> > Didcot
> > Oxfordshire OX11 0QX
> > United Kingdom
> > Email:        a.j.miles@rl.ac.uk
> > Tel: +44 (0)1235 445440
> >
> >
> 
> 
Received on Tuesday, 21 September 2004 12:46:10 GMT

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