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[PORT] Report on recent activity on public-esw-thes@w3.org and SK OS Core development

From: Miles, AJ (Alistair) <A.J.Miles@rl.ac.uk>
Date: Thu, 19 Aug 2004 16:09:11 +0100
Message-ID: <350DC7048372D31197F200902773DF4C05E50BCC@exchange11.rl.ac.uk>
To: "'public-swbp-wg@w3.org'" <public-swbp-wg@w3.org>

This a summary of the recent discussion on public-esw-thes@w3.org and
development activity relating to the SKOS Core RDF Vocabulary.


Dan Brickley has written a PHP script that exports categories from Wordpress
(a PHP weblogging system) ... see the link below for more info.


I wrote a SKOS Validator in Java, that checks SKOS RDF data for various
violations of the SKOS data model, including circularity of the
broader/narrower hierarchy and multiple values of skos:prefLabel per
language.  See the link below for download info (N.B. this is at alpha
release stage).


SKOS Core Actions

Handling top concepts:  After some extensive discussion, a proposal reached
consensus for introducing a new property for handling top concepts, and
deprecating the old skos:TopConcept class.  See the action announcement
linked below, and also the public-esw-thes@w3.org archive [1] for prior


SKOS Core Proposals

Local (non-URI) identifiers:  Most schemes have their own non-URI identifier
scheme, but we realised that some system needs to be introduced to
disambiguate local identifiers where concepts are members of more than one
scheme.  A proposal is in discussion, see link below for latest:


'Arrays' of concepts:  There is a requirement to support labelled 'arrays'
of concepts, which is a commonly used construct in the thesaurus community.
A discussion of options for generating a proposal is written up at the link



Scheme versioning and change management: I thought it is very important to
be able to offer clear recommendations on how to handle versioning of
concept schemes on the semantic web.  This is inevitably a difficult issue,
so I started discussion with a writeup of possible support options at the
link below.  See also followup on public-esw-thes [1] on the same thread.


Concept schemes and the models that describe them: Another issue is where to
put the RDF descriptions of concept schemes, and how to relate these
resources to the abstract resources they describe.  I tried to kick off a
discussion, see link below, as yet no response ...


That's it for now.



See also:
[1] public-esw-thes@w3.org mailing list archive 
[2] SKOS Changelog 
[3] SkosDev Wiki 
[4] SKOS Home 
[5] SKOS Core Home 

Alistair Miles
Research Associate
CCLRC - Rutherford Appleton Laboratory
Building R1 Room 1.60
Fermi Avenue
Oxfordshire OX11 0QX
United Kingdom
Email:        a.j.miles@rl.ac.uk
Tel: +44 (0)1235 445440
Received on Thursday, 19 August 2004 15:09:45 UTC

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