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From Chris Dollin <>
Subject Re: symmetry of class-equivalence relation in OWL
Date Tue, 21 Dec 2010 08:30:37 GMT
On Tuesday, December 21, 2010 06:21:21 am Sean Champ wrote:
> Hi folks, just a question:
> Given an OWL class A, with A denoted as (the subject) having an equivalent
> class B: I've seen that Jena will return B within the return value of
> A.listEquivalentClasses(). However - in my experience with using Jena 2.6.3
> - the return value of B.listEquivalentClasses() will not contain A, in that
> same situation.

What reasoner are you using?

The different OntModelSpec's give you different reasoning power. The
/default/ reasoner for createOntologyModel only does RDFS reasoning,
which knows not owl:equivalentClass.

So show us how you create your model.


"Why do our plans never work?"                            Ka D'Argo, /Farscape/

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