Hello,
After transforming the SWRL from the ontologie to jess rules, I've obtained
a rule list that looks like that :
(defrule rule-6
(triple
(predicate "http://a.com/ontology#hasChild";)
(subject ?x)
(object ?y)
)
(triple
(predicate "http://www.w3.org/1999/02/22-rdf-syntax-ns#type";)
(subject ?y)
(object "http://a.com/ontology#Woman";)
)
=>
(assert
(triple
(predicate "http://a.com/ontology#hasDaughter";)
(subject ?x)
(object ?y)
)
Well, now how can I describe in java the following fact :
"John has a child , and the child is a woman " ???
so that when I run the rete engine it can tells me that john has a daughter...
If someone can write me a sample code, i'd be very gratefull.
thank u
[EMAIL PROTECTED] wrote:
I think ahmad Sayed wrote:
[Charset iso-8859-1 unsupported, filtering to ASCII...]
> Hi there,
>
> After building my OWL ontology with its SWRL rules, I've transformed this
> knowledge base to jess in order to make some inferences over ontology
> individuals. So now i've got my 2 files ontology.jess and ontology.clp that I
> have to exploit them in a java application. However, I've hard time using
> them. Could someone bring me just a simple code on how to start over?
> (loading these files, parsing rules, and doing some simple inferences )
>
> My Knowledge base looked like that (in SWRL, before converting it to jess) :
>
> SWRL rule-1: hasparent(?x, ?y) ^ hasbrother(?y,?z) -->hasuncle(?x,?z)
>
> I need to make inferences like :
> hasparent(john,?y) ^ hasbrother (?y, michael) --> hasuncle (john, michael )
>
> How can I do that?
>
I don't know the SWRL syntax, specifically, but I'm assuming that this
just says if someone has a parent, and the parent has a brother, that
the brother is that someone's uncle. I don't know what you mean about
your two files *.jess and *.clp; maybe one contains rules and the
other contains facts? My answer to how you would "make these
inferences" obviously depends strongly on what the rules and facts
look like, but basically, you'd just assert facts that represented
john, john's father, michael, and their known relationships, and run
the engine. Presumably your rules would create new facts to represent
their derived relationships, but again, that depends entirely on what
you've got for rules. Then you might use a defquery to extract all the
facts regarding john's relationships.
---------------------------------------------------------
Ernest Friedman-Hill
Advanced Software Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
PO Box 969, MS 9012 [EMAIL PROTECTED]
Livermore, CA 94550 http://herzberg.ca.sandia.gov
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