- From: Alistair Miles <alistair.miles@zoo.ox.ac.uk>
- Date: Tue, 14 Oct 2008 12:21:09 +0100
- To: Antoine Isaac <aisaac@few.vu.nl>
- Cc: Sean Bechhofer <sean.bechhofer@manchester.ac.uk>, Ed Summers <ehs@pobox.com>, SWD Working SWD <public-swd-wg@w3.org>
Hi Antoine, On Mon, Oct 13, 2008 at 06:04:19PM +0200, Antoine Isaac wrote: >> * ISSUE-181 > > This is again related to the issue of skos:Collections that cannot be > included in concept hierarchies. > If Michael's "centered entities" really cannot be modelled as > Collections, then indeed the only choice would be to represent them as > skos:Concepts. > Note that if we had accepted the requirement > R-IndexingAndNonIndexingConcepts [3] we could have proposed a solution > to this. Indeed I guess that Michael's "non-assignable" concepts can be > likened to what I called "non-indexing concepts" (if we ignore the fact > that Michael's entities also have a skos:Collection flavour). > Still, as the requirement of having an indexing property in SKOS has > been dropped, we have (rightfully) dropped this one as well. > Therefore, given the current state of SKOS, what I would recommand is > for Michael to make his own solution to > R-IndexingAndNonIndexingConcepts. That is: > - first identify an indexing property he wants to use to assign concepts > to other resources (e.g. dc:subject). > - second, define a subclass of skos:Concept, e.g. > my:NonAssignableConcept, which is defined as not being usable as the > object of statements involving the chosen indexing property. This can be > done in OWL using a property inverse of the indexing one, in an > appropriate OWL cardinality constraint. Sounds very reasonable, thanks. Alistair. >> [1] http://lists.w3.org/Archives/Public/public-swd-wg/2008Oct/0061.html > > [2] http://lists.w3.org/Archives/Public/public-swd-wg/2008Oct/0131.html > [3] http://www.w3.org/TR/SKOS-UCR#R-IndexingAndNonIndexingConcepts > [4] http://lists.w3.org/Archives/Public/public-swd-wg/2008Oct/0132.html > > > -- Alistair Miles Senior Computing Officer Image Bioinformatics Research Group Department of Zoology The Tinbergen Building University of Oxford South Parks Road Oxford OX1 3PS United Kingdom Web: http://purl.org/net/aliman Email: alistair.miles@zoo.ox.ac.uk Tel: +44 (0)1865 281993
Received on Tuesday, 14 October 2008 11:36:56 UTC