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[protege-owl] SWRL/Jess exception

Donald Hillman djh3 at Lehigh.EDU
Thu Aug 14 11:28:02 PDT 2008

Thanks for the response. I just sent a screenshot which I canceled 
because of length.
One of the rules for which the using variable before definition 
exception occurs is:
IsConnectedTo(?z,?y) /\ hasPart(?x,?z) -> IsConnectedTo(?x,?y)
I also have an ontology with these Properties (and Classes and 
Individuals, etc)

Appreciate your comments

--Donald Hillman

Samson Tu wrote:
> Perhaps you used a variable on the RHS of a rule without having it bound 
>   on the LHS? There is no "variable declaration" in SWRL tab.
> Samson
> Donald Hillman wrote:
>> When attempting to run a SRWL rule with Jess, the exception 'using 
>> variable before definition' is thrown. This appears to indicate that a 
>> variable has not been declared.  How is a variable declared using the 
>> Jess plugin or otherwise?
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