RE: [Proposal][SKOS-Core] skos:denotes

Oh, and ...

> (1) Add a new property 'skos:denotesSameAs' to SKOS Core, which is
> *symmetric* and which carries essentially the same semantics as
> skos-map:exactMatch.

... this property also transitive.

Al.


> 
> (2) Add a new property 'skos:denotesClass' to SKOS Core, with domain
> skos:Concept and range rdfs:Class, *as a sub-property of
> skos:denotesSameAs*.
> 
> (3) Add a new property 'skos:denotesIndividual' to SKOS Core, 
> with domain
> skos:Concept and range rdf:Resource, *as a sub-property of
> skos:denotesSameAs*.
> 
> So (1) establishes the underlying ontological commitment that 
> a skos:Concept
> sits at the same level of abstraction as an RDFS/OWL Class/Individual.
> However, (2) and (3) allow the *directionality* of such a 
> relationship to be
> captured, where that is required.
> 
> Er, re-reading that it back to myself, it sounds potentially 
> a little shaky,
> but I'll post this anyway, and hopefully it will stimulate more ideas.
> 
> Al.
> 
> [1] 
> http://lists.w3.org/Archives/Public/public-esw-thes/2004Sep/0067.html
> [2] 
> http://lists.w3.org/Archives/Public/public-esw-thes/2004Oct/0005.html
> 
> 
> ---
> 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: public-esw-thes-request@w3.org
> > [mailto:public-esw-thes-request@w3.org]On Behalf Of Miles, AJ 
> > (Alistair)
> > 
> > Sent: 14 October 2004 15:25
> > To: 'Leo Sauermann'; public-esw-thes@w3.org
> > Subject: RE: [Proposal][SKOS-Core] skos:denotes
> > 
> > 
> > 
> > Hi Leo,
> > 
> > To answer the easiest question first, the 'traditional' way 
> > to use SKOS
> > concepts is as the values in a subject-based index of 
> > documents.  There is a
> > proposal on the table [1] for a 'skos:subject' property, 
> > which basically
> > behaves in the same way to the 'dc:subject' property, i.e. 
> > you will be able
> > to state:
> > 
> > <rdf:RDF /*standard namespaces*/>
> > 
> >   <rdf:Description rdf:about="http://foo.com/somedoc.html">
> >     <skos:subject rdf:resource="http://bar.com/some#concept"/>
> >   </rdf:Description>
> > 
> > </rdf:RDF>
> > 
> > Of course, there are many other scenarios emerging in which 
> > SKOS concepts
> > can be used (and your use case is expanding the set I had 
> > imagined so far
> > :).  For example, a SKOS concept can be depicted by an image, 
> > or a SKOS
> > concept could be a topic of interest or expertise for a person ...
> > 
> > Anyway.  Another set of scenarios (including yours I think) 
> > requires us to
> > be able to express a relationship between a SKOS concept and 
> > an RDFS/OWL
> > Class/Individual that 'intends'/'represents'/'denotes' the 
> > same (or similar)
> > thing.  This requirement was the basis for the original 
> 'skos:denotes'
> > proposal [2] which has been argued for by danbri (see e.g. [3]).
> > 
> > However, others have argued that a relationship of meaning 
> > between a SKOS
> > concept and an RDFS/OWL Class/Individual is essentially the 
> same as a
> > mapping relationship between two SKOS concepts (see e.g. 
> > [4]).  Or in other
> > words, there is no difference in the level of abstraction 
> > between a SKOS
> > concept and an RDFS/OWL Class/Individual.  Hence a 
> > 'skos:denotes' property
> > is not appropriate.
> > 
> > So this debate is currently poised :)  
> > 
> > I'm just thinking, perhaps a more detailed description of 
> > your requirements
> > here could help us with this problem ... could you expand a 
> > little on these
> > for us?
> > 
> > Thanks,
> > 
> > Alistair.
> > 
> > [1] 
> > 
> http://lists.w3.org/Archives/Public/public-esw-thes/2004Oct/0081.html
> > [2] 
> > 
> http://lists.w3.org/Archives/Public/public-esw-thes/2004Sep/0041.html
> > [3] 
> > 
> http://lists.w3.org/Archives/Public/public-esw-thes/2004Sep/0067.html
> > [4] 
> > 
> http://lists.w3.org/Archives/Public/public-esw-thes/2004Oct/0005.html
> > 
> > 
> > 
> > -----Original Message-----
> > From: public-esw-thes-request@w3.org
> > [mailto:public-esw-thes-request@w3.org]On Behalf Of Leo Sauermann
> > Sent: 14 October 2004 09:46
> > To: public-esw-thes@w3.org
> > Subject: Re: [Proposal][SKOS-Core] skos:denotes
> > 
> > 
> > Danbri:
> > 
> > > RDF tries to impose some basic design constraints across 
> > all projects
> > > that use it, to make things easier for data-merging, extensibility
> > > etc. What we're doing with skos:represents (or whatever it gets
> > > called) is coming up with a little add-on that helps 
> SKOS-based RDF
> > > data work better with non-SKOS RDF data.
> > 
> > 
> > I could not follow the whole discussion, because I began 
> > thinking about skos
> > a week ago
> > http://leobard.twoday.net/stories/360443/
> > 
> > My Goal is:
> > 
> > I want to build stuctures that are independent of nromal RDF 
> > instances, that
> > means: I want to model things like "Job" 
> > "Private" "ProjectX" and form these things as SKOS:Concepts
> > 
> > then I have emails, files, photos, websites, etc that I want 
> > to add to these
> > SKOS:concepts
> > 
> > Ideal:
> > SKOS concepts
> > REAL LIFE Resources
> > 
> > JOB
> >  - Project X
> >      - Meeting 23.10.2004
> >  - Project Y
> > Email "skos;denoites"
> > File "skos image"
> > Website "skos website"
> > Website "http://www.w3.org/2001/sw"
> > 
> > 
> > now I want
> > <meeting 23.10.2004> <????> <http://www.w3.org/2001/sw>
> > 
> > 
> > the problem:
> > You forgot to add somehting to skos that allows to acutally 
> USE skos.
> > A thesaurus /taxonomy/  whatever is only useful when I can 
> link it to
> > external RDF resources,
> > 
> > All predicates in SKOS are having domain/range skos Concepts,
> > but SKOS concepts are a closed thing and I want to create 
> > triples from skos
> > to the outer world.
> > The "real" resources out there in the world are of type 
> > email, file, person,
> > vcard, vEvent
> > 
> > So, please,
> > tell me which property I have to use to hang real resources 
> to a SKOS
> > concept.
> > is this SKOS:denotes?
> > 
> > is it dc:hasPart ?
> > 
> > cheers
> > Leo
> > 
>

Received on Thursday, 14 October 2004 16:20:47 UTC