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Re: RDF Recommendation Set comments (re agenda for 6th April)

From: Antoine Zimmermann <antoine.zimmermann@insa-lyon.fr>
Date: Thu, 07 Apr 2011 17:40:37 +0200
Message-ID: <4D9DDAF5.4070301@insa-lyon.fr>
CC: public-rdf-wg@w3.org
Le 07/04/2011 15:31, Peter Frederick Patel-Schneider a écrit :
> Well, it is possible to derive contradictions in RDFS all by itself, so
> the answer to your question is obvious.


Then, let us consider RDFS without datatypes. In this case, it is not 
possible to derive contradictions. However, by adding owl:sameAs, it is 
possible to derive contradictions even in absence of datatypes.

:x owl:sameAs "abc" .
:x owl:sameAs "xyz" .

or, even better:

rdf:type owl:sameAs owl:sameAs .


AZ.

>
> peter
>
>
> From: William Waites<ww@styx.org>
> Subject: Re: RDF Recommendation Set comments (re agenda for 6th April)
> Date: Wed, 6 Apr 2011 13:02:31 -0500
>
>> Apologies for top-posting,  writing from my phone.
>>
>> I generally agree and have been thinking about the minimum that you have
>> to take from owl to be able to derive contradictions using rdfs. The use
>> case for this is debugging - detecting modelling errors. I think
>> owl:disjointFrom is in the list. SameAs definitely isn't. Despite its
>> clear analytical meaning for all practical purposes it means
>> RelevantlySimilarTo and should not be taken literally except perhaps in
>> some very well defined limited domains...
>>
>> Cheers
>


-- 
Antoine Zimmermann
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antoine.zimmermann@insa-lyon.fr
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Received on Thursday, 7 April 2011 15:41:06 GMT

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