The SKOS relationship termed "broader" does not correspond to the traditional BT relationship. Instead SKOS "broader" is a subset of Broader Term). That is, not ever pair of concepts that are related as Broader Terms is also related by "broader", but every pair that is "broader" is also "Broader Term". Thus "broader" is a sub property of "broaderTransitive". This construction may be legal. Antoniou and Harmelen (2003) claim in passing that transitivity in owl properties is inherited - "No transitive cardinality restrictions: no cardinality restrictions may be placed on transitive properties (or their subproperties, which are of course also transitive, by implication" However, the OWL semantics do not appear to require this, and no inferences about the particular class of a property seem to be directly licensed. Of course, the correct super property of SKOS "broader" should be "related", since it is now an associative relationship. Simon *Antinou, G. and Frank van Harmelen (2003) "Web Ontology Language: OWL" in Handbook on Ontologies. Springer Verlag. Available at http://www.cs.vu.nl/~frankh/postscript/OntoHandbook03OWL.pdf* * * On Tue, Mar 11, 2008 at 12:34 PM, Sini, Margherita (KCEW) < Margherita.Sini@fao.org> wrote: > I agree with Andy, I also think it should be a sub-property, not a > super-property... > > Regards > Margherita >
Received on Tuesday, 11 March 2008 17:30:47 UTC