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Re: "ObjectProperty" and "DatatypeProperty"

From: Ian Horrocks <horrocks@cs.man.ac.uk>
Date: Tue, 22 Jul 2003 10:39:20 +0100
Message-ID: <16157.1608.17283.509938@merlin.horrocks.net>
To: Jim Hendler <hendler@cs.umd.edu>
Cc: webont <www-webont-wg@w3.org>

On July 18, Jim Hendler writes:
> 
> At 2:09 PM -0700 7/18/03, Kevin D. Keck wrote:
> >Sure, I'll move the naming discussion to the rdf-logic list, but that was only
> >the first part of my comment.
> >
> >The second was that I, at least, was confused about whether (in OWL-DL)
> >owl:Class'es are owl:Thing's. I thought the idea is that they're not, but then
> >I came across the "Class instances are all OWL objects" statement (AS&S, Sec
> >5.2, see below). What does this mean? Does this mean owl:Class'es _are_
> >owl:Things? Or does it mean they're both in the range of owl:ObjectProperty
> >(contrary to the range given)? And if not, then what subclass of Property
> >includes rdf:type? Some class there's no name for?
> >--
> >Kevin D. Keck
> >http://vimss.lbl.gov/~kdkeck/
> >510-486-4856
> 
> 
> Kevin - thanks, I missed that part in skimming through - I've asked 
> the S&AS editors to send you a reply - JH

I am discussing this with Peter. I believe that we can respond with a
small clarification of the relevant text.

Ian



> 
> -- 
> Professor James Hendler				  hendler@cs.umd.edu
> Director, Semantic Web and Agent Technologies	  301-405-2696
> Maryland Information and Network Dynamics Lab.	  301-405-6707 (Fax)
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Received on Tuesday, 22 July 2003 05:40:27 GMT

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