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[protege-owl] Negated Properties in SWRLTab

Papapanagiotou Petros std01092 at
Tue Aug 14 19:00:38 PDT 2007

Dear Matt,

I'm afraid negation is not supported by SWRL.

Adding support for negation isn't a trivial matter. Negation-as-failure 
is contradictory to the SW open-world assumption. Thus, SWRL is, 
unfortunately, limited in this regard.

You'll have to think of a way around it, if any.


Matt Williams wrote:
> Dear All,
> Is there any way of using negated properties in SWRL?
> I would like to use a rule such as:
> ?a myProp ?b -> ?a not myOtherProp ?b
> but the editor won't allow me.
> Any ideas?
> Matt

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