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[protege-owl] SWRL RULE

Martin O'Connor martin.oconnor at
Thu May 15 17:20:31 PDT 2008

Are there individuals in your ontology that satisfy this rule? You can 
easily try a SQWRL query to see, e.g.,

Parent(?P)   ∧Child(?C) ∧ hasChild(?P,?C)   →  sqwrl:select(?P,?C)

Though, as Thomas said, you do not need SWRL for this.


drazik wrote:

>I have 2 classes:  Parent, and Child. I have an object properly : hasChild ,
>I tried to configure the SWRL following rule:
> Parent(?P)   ∧Child(?C) ∧ hasChild(?P,?C)   →  (hasChild <= 1)(?P) 
>I  think (hasChild<= 1) is syntactically not supported, 
>so I will have to create a named OWL class with the class description
>(hasChild <= 1) attached. Assuming the class is called Contraint, the
> rule will be:
>  Parent(?P)   ∧Child(?C) ∧  hasChild(?P,?C)   → Contraint(?P) 
>but this rule doesn't work ,
>where is the problem ??
>if there is a possibility to express this restriction with protege tel me it 
>thanks a lot

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