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Re: Semantics, in particular DAML+OIL semantics

From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
Date: Thu, 15 Aug 2002 09:30:49 -0400
To: guha@guha.com
Cc: www-rdf-logic@w3.org
Message-Id: <20020815093049L.pfps@research.bell-labs.com> 

From: "R.V.Guha" <guha@guha.com>
Subject: Re: Semantics, in particular DAML+OIL semantics
Date: Wed, 14 Aug 2002 14:46:58 -0700

> I am referring to the ability to treat classes and [properties] as first
> class objects.

Hmm.  I would instead say that RDF and RDFS treat everything, classes and
properties as well, as third-class objects.  There is *very* little that
one can say about classes and predicates in RDF and RDFS.

The difficulty arises when one wants to say more about classes and
properties and, in particular, construct complex classes and properties or
construct complex sentences, i.e., treat them as at least second-class
objects.  

peter
Received on Thursday, 15 August 2002 09:31:18 GMT

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