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

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

Tools
-------

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

<http://lists.w3.org/Archives/Public/public-esw/2004Aug/0001.html>

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).

<http://esw.w3.org/topic/SkosValidator>

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
discussions.

<http://esw.w3.org/mt/esw/archives/000082.html>

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:

<http://lists.w3.org/Archives/Public/public-esw-thes/2004Aug/0031.html>

'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
below.

<http://esw.w3.org/topic/SkosDev/SkosCore/CollectionsAndArrays>

Discussion
---------------

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.

<http://lists.w3.org/Archives/Public/public-esw-thes/2004Aug/0035.html>

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 ...

<http://lists.w3.org/Archives/Public/public-esw-thes/2004Aug/0034.html> 

That's it for now.

Yours,

Alistair.

See also:
 
[1] public-esw-thes@w3.org mailing list archive 
<http://lists.w3.org/Archives/Public/public-esw-thes/2004Aug/>
[2] SKOS Changelog 
<http://esw.w3.org/mt/esw/archives/cat_skos_changelog.html>
[3] SkosDev Wiki 
<http://esw.w3.org/topic/SkosDev>
[4] SKOS Home 
<http://www.w3.org/2004/02/skos/>
[5] SKOS Core Home 
<http://www.w3.org/2004/02/skos/core/>


---
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 Thursday, 19 August 2004 15:09:45 UTC