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Re: Domain/Range: conjuntion or disjuntion??

From: Arjohn Kampman <akam@aidministrator.nl>
Date: Thu, 22 Nov 2001 16:48:52 +0100 (MET)
Message-Id: <200111221548.QAA08029@spa.aidministrator.nl>
To: conen@gmx.de
Cc: www-rdf-interest@w3.org
> > Does that sound reasonable to you, Arjohn?
> 
> Arjohn answered:
> > I think so. I'll try to summarize for my own understanding:
> > 
> > - On a 'local' level (i.e. disregarding super properties) both conjunction
> >   and disjuction interpretations are possible. So the range of a property p
> >   can be restricted to e.g. D1 u D2.
> > 
> > - The range of a property is >*implicitely*< restricted to the 
> >   conjunction of the range-restriction of the property itself and of 
> >   its superproperties;e.g. p --range--> (D1 u D2) n C1 n C2
> > 
> > Is this what you were saying?
> 
> Yes ;)  (yours is much more concise though...) - only "implicit" maybe a
> bit misleading (I used it too), because it is just a consequence of
> subProperty and range constraint working together. (let me also
> emphasize again that the question of conjunctive/disjunctive
> interpretation of multiple constraints have been related to the local
> level)

Ok, thanks for your explanation.

arjohn
Received on Thursday, 22 November 2001 10:50:16 GMT

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