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Re: Question about SWRL semantics

From: Andrea Splendiani <andrea@pasteur.fr>
Date: Mon, 5 Dec 2005 18:41:14 +0100
Message-Id: <14dbe1b174b017cd85e96b7c26c26631@pasteur.fr>
Cc: semantic-web@w3.org
To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>

Ok,
I just forgot one point.
I was testing it querying through SPARQL,
I guess anyway SPARQL should se an "inffered set of relations", o that 
is not an issue. Isn't it ?

The semantics you describe is the one I expected.

best,
Andrea Splendiani

Il giorno 05/dic/05, alle 18:31, Peter F. Patel-Schneider ha scritto:

>
> From: Andrea Splendiani <andrea@pasteur.fr>
> Subject: Question about SWRL semantics
> Date: Mon, 5 Dec 2005 18:15:14 +0100
>
>> Hi,
>> I['m] asking this here but feel free to redirect me to some more 
>> specific
>> resources if it is the case.
>>
>> I was using SWRL rules in Protégé and I have noticed that SWRL does 
>> not
>> "view" the relations that can be inferred from OWL.
>>
>> Is this a feature of SWRL semantics ?
>> Is is just undefined and "implementation specific" ?
>> Is it due to the inability of the reasoner (Pellet) to infer too much
>> about instances ?
>>
>> best,
>> Andrea Splendiani
>
> If you have a KB (however this is formed) that includes both SWRL 
> rules and OWL
> axioms then a complete SWRL reasoner should "take note" of both the 
> rules and
> the axioms, as specified in the SWRL documentation.
>
> So, for example,
>
> 	Class(Student Person)
> 	Class(Rock Immobile)
> 	Individual(John type(Student))
> 	Implies(Antecedent(Person(I-variable(x))) 
> Consequent(Rock(I-variable(x))))
>
> entails
>
> 	Individual(John type(Immobile))
>
>
> I do not know why you are not obtaining the results you expect, but it 
> seems to
> me that you are expecting the results that are provided by the SWRL 
> semantics.
>
> Peter F. Patel-Schneider
> Bell Labs Research
>
>
>
Received on Monday, 5 December 2005 17:41:32 GMT

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