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Re: "inverse" in owl-guide

From: Ivan Herman <ivan@w3.org>
Date: Wed, 29 Aug 2007 05:16:20 +0200
Message-ID: <46D4E504.407@w3.org>
To: Dave Matthews <matthews@greengenes.cit.cornell.edu>
CC: public-webont-comments@w3.org
Dear Dave,

thanks for the comment.

W3C is working on possibly starting a new Web Ontology Working Group,
whose task will include an update of OWL. This has not been decided yet
at the moment of writing this mail, but there is a certain probability
that this will indeed happen and relatively soon. Your comment will
certainly be taken into account by that group.

Sincerely

Ivan

Dave Matthews wrote:
> Something got removed from this message as I sent it.  The first line said
> which webpage has the problem I'm complaining about.  The line was/is:
> 
> "http://www.w3.org/TR/owl-guide/ says:"
> 
> Repeating,
> w w w . w 3 . o r g / T R / o w l - g u i d e 
> 
> - Dave
> 
> 
>> From: Dave Matthews <matthews@greengenes.cit.cornell.edu> 
>> Date: Sun, 26 Aug 2007 16:27:47 -0400 (EDT)
>> To: public-webont-comments@w3.org 
>>
>>
>> : Each of these sublanguages is an extension of its simpler predecessor, both
>> : in what can be legally expressed and in what can be validly concluded. The
>> : following set of relations hold. Their inverses do not.
>> : 
>> : Every legal OWL Lite ontology is a legal OWL DL ontology.  ...
>>
>> I believe you mean "converses".  The converse is
>>   
>>   Every legal OWL DL ontology is a legal OWL Lite ontology.
>>
>> The inverse is
>>
>>   Every legal OWL Lite ontology is not a legal OWL DL ontology.
>>
>>
>> OWL is an advanced logic.  Not good to have a basic error like this in the
>> documentation.  
>> A subset/superset relation might be more appropriate.
>>
>> - Dave
> 
> 
> 

-- 

Ivan Herman, W3C Semantic Web Activity Lead
Home: http://www.w3.org/People/Ivan/
PGP Key: http://www.ivan-herman.net/pgpkey.html
FOAF: http://www.ivan-herman.net/foaf.rdf

Received on Wednesday, 29 August 2007 03:29:00 GMT

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