RE: SKOS-Core comments and labels added

Hi Aida,

> 
> Alistair,
> In my experience a concept in classification scheme if it is 
> to be machine
> handled
> needs to be identified in two ways: with its notation and with
> unique identifier...
> 
> e.g.  I am here giving the example from faceted classification
> 
> 590 Religion [discipline]
> 590A Theory and Philosophy of religion [facet]
> 590A3 The Holy. The sacred. The supernatural. Object(s) of 
> religion/worship
> [subfacet of the facet A]
> 590A34       Nature. Taboo, herem, sacredness [class with no 
> subclasses...
> 'concept' ?]
> 
> Now, notation 590A34 defines the class unuquely, and it is 
> fully operational
> as an identifier
> within the system. But the in the process of vocabulary 
> maintenance notation
> can be
> altered. So it is usually necessary to have place for both 
> unique identifier
> of a concept (independent
> from notation) as well as its notational symbol. Otherwise it is not
> possible to exhchange and
> update vocabulary....
> 

One of the major design requirements of the SKOS vocabs is that they are
extensible.  So I would be quite happy for you to extend the
<soks:externalID> property and create two subproperties <class:notation> and
<class:permID> for example.  Would this fulfill your requirements?

> 
> Also classification systems have
> a) notation
> b) textual description of a class (this is not a concept)
> c) terms/descriptors pointing to the class (subject 
> alphabetical index)
> Some classifications have alphabetical index in the form
> of thesarus.
> 
> Organizationaly analytico-synthetic (faceted) classification have
> facets, subfacets, subfacets of subfacets and finally a hierarchy of
> concepts, that
> may be combined among themselves. This vocabulary is 
> organized in relational
> in
> a manner so that one the same facet can be used as a 
> specifier for many
> concepts
> scattered in the scheme.
> E.g. the facet of colours can be used in physics, art, chemistry, etc.
> It is very important that one can link each class/concept 
> with the facet
> which can be used for its further specification.
> This is not covered with any relationships that already exist 
> in thesaurus
> as
> thesaurus does not offer the possibility to precombine 
> descriptors. This is
> characteristics of analytico-synthetic classifications (faceted).
> 
> sorry if this is confusing, but it looks like that the scheme you
> are suggesting is rather comprehensive and I wonder whether it would
> be good enough to host classification vocabulary...
> 
> Aida
> 

The application of SKOS to classification schemes and faceted structures is
something I would very much like to explore.  Could you send me some links
to some classification schemes you think might be a good testbed for SKOS?
I'd be very grateful.

If you'd like to stay involved with the development of SKOS you're very
welcome.  There is the public list <public-esw-thes@w3.org> and the RDF
Thesaurus wiki <http://esw.w3.org/topic/RdfThesaurus> which you are most
welcome to contribute to.

Yours,

Alistair.
  

 

> -----Original Message-----
> From: Networked Knowledge Organization Systems list
> [mailto:NKOS@dli2.nsf.gov]On Behalf Of Miles, AJ (Alistair)
> Sent: 26 November 2003 17:09
> To: NKOS@dli2.nsf.gov
> Subject: FW: SKOS-Core comments and labels added
> 
> 
> > Comments and labels have been added to the SKOS-Core vocabulary.
> >
> > <http://www.w3c.rl.ac.uk/2003/11/21-skos-core>
> >
> > Yours,
> >
> > Alistair Miles.
> >
> > 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
> > Telephone: +44 (0)1235 445440
> >
> >
> 
> 
>

Received on Thursday, 27 November 2003 09:14:52 UTC