- From: Sean Bechhofer <sean.bechhofer@manchester.ac.uk>
- Date: Tue, 12 Feb 2008 14:40:29 +0000
- To: "Deridder, Jody L" <rde2@utk.edu>
- Cc: <public-swd-wg@w3.org>
On 11 Feb 2008, at 02:10, Deridder, Jody L wrote: > This is related to Issue-69. > > <A> skos: broader <B> . > <B> skos: broader <A>. > > is again, nonsense. If B is a subset of A, then A cannot be a > subset of B. skos:broaderTransitive needs to be defined as an > irreflexive property. Jody I think it's a little strong to say this is "nonsense". The skos:broader relationship is *not* the same as subset. If B is a subset of A, then A can certainly be a subset of B -- if it is, then it's simply the case that the two sets are identical. However, skos:broader is intended to represent something more general, and in some ways less "formal" than subset (we already have rdfs:subClassOf to represent the subclass relationship). So we should be careful not to conflate the two. Having said that, it may be the case that it is appropriate to define skos:broader as ireflexive, but that would be quite a strong restriction. Sean -- Sean Bechhofer School of Computer Science University of Manchester sean.bechhofer@manchester.ac.uk http://www.cs.manchester.ac.uk/people/bechhofer
Received on Tuesday, 12 February 2008 14:43:17 UTC