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[protege-owl] Problem with SWRLTab and Jess

Lorne Bouchard lorne.bouchard at
Mon Jan 21 04:33:47 PST 2008

Hi there!

I was playing with the family.srrl.owl demo and after reading the SWRLEditor
FAQ I am baffled...

Consider the following SWRL rules:

hasChild(?x, ?y) ^  hasChild(?x, ?z)   → hasSibling(?y, ?z)
hasChild(?x, ?y) ^  hasChild(?x, ?z)  ^  differentFrom(M01, M02)  →
hasSibling(?y, ?z)
hasChild(?x, ?y) ^  hasChild(?x, ?z)  ^  differentFrom(?y, ?z)  →
hasSibling(?y, ?z)

Why does the first rule fire in Jess, whilst the other two do not?

Execution of the first rule show that variables ?x, ?y and ?z are
instantiated correctly with OWL individuals.

Or am I missing something?

Thanks for your help.


- Lorne

Lorne H. Bouchard
Professeur associé
Département informatique

tél.: 1-514-488-5226

"May the source always be with you,  even if some assembly is required !"
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