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RE: Representation of Negative Assertions in OWL 1.0

From: Kashyap, Vipul <VKASHYAP1@PARTNERS.ORG>
Date: Sun, 8 Jun 2008 07:14:47 -0400
Message-ID: <DBA3C02EAD0DC14BBB667C345EE2D12402948813@PHSXMB20.partners.org>
To: "Alan Ruttenberg" <alanruttenberg@gmail.com>, "OWL Working Group WG" <public-owl-wg@w3.org>

 

> Individual(Sarkozy type(Restriction(isPresidentOf allValuesFrom 
> (complementOf(oneOf(USA))))))

The above statement says:
"If Sarkozy is the president of a country than that country is a country other
than the USA".

This to me appears different from "Sarkozy is not the president of USA".

How about the following formulation (Please excuse incorrect syntax):

Individual(Sarkoy type(Restriction(= 0 isPresidentOf oneOf{USA)}))

I would assume that the above two formulations are logically equivalent but the
latter seems closer to the negated assertion.

In a more general context, given that there might be multiple ways of saying the
same thing, would it be of interest to propose best practices/style guides for
these situations?

At the same time, I think this syntactic sugar offers a big value add for
ontology authors seeking to develop simpler ontologies.

---Vipul

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Received on Sunday, 8 June 2008 11:15:34 GMT

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