- From: Antoine Isaac <Antoine.Isaac@KB.nl>
- Date: Sun, 8 Jun 2008 15:31:12 +0200
- To: "Leonard Will" <L.Will@willpowerinfo.co.uk>, <public-esw-thes@w3.org>
- Message-ID: <68C22185DB90CA41A5ACBD8E834C5ECD04953DCC@goofy.wpakb.kb.nl>
Dear Leonard, > > It seems to me that confusion about "broaderTransitive" and > "narrowerTransitive", especially their being wider in meaning than > "broader" and "narrower", arises from their being given inappropriate > names. > > Calling a relationship "broaderTransitive" appears to say something > which restricts the nature of the relationship, whereas it seems to be > being used in SKOS just to say something about the concepts which can be > related by it. Creating a transitive closure of a property might appear as a restriction, but it is not if you really look at the formal semantics of (OWL property) transitivity You can have a look at the threads http://lists.w3.org/Archives/Public/public-esw-thes/2008Mar/0033.html http://lists.w3.org/Archives/Public/public-swd-wg/2008Mar/0039.html where I tried to explain this. But I think anyway you already got it right, if I understand properly your following question: > > Am I right in thinking that on the analogy of direct relationships being > expressed as "parent / child", the idea that "broaderTransitive / > narrowerTransitive" tries to express is "ancestor / descendant" ? Yes > > If this is the case, then it is clear that "broaderParent" is a specific > case of "broaderAncestor", and these names would be less confusing. If > you don't like them, how about "broaderIndirect" for "broaderAncestor", > leaving "broader" on its own to express "broaderParent", for which it > has generally been used in thesauri? > > I still find "A broader B" to be ambiguous, and would like to see it > expressed as "hasBroaderConcept" to avoid confusion with > "isBroaderConceptOf". These would appear quite neatly as > "hasBroaderParent" and "hasBroaderAncestor" or even "hasParent" and > "hasAncestor". > > Similarly for narrower . . . I cannot blame you for thinking this, I quite agree for myself. The problem is that skos:broader has already quite widely used. But the 'ancestor' idea might be quite relevant, even though a bit pleonastic (but maybe in the end redundancy is what we really need: broader-in-the-sense-of-ancestor-and-by-the-way-it-should-also-be-used-for-classification-scheme-specialization ;-) Best, Antoine
Received on Sunday, 8 June 2008 13:32:24 UTC