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Re: Extending daml+oil with concrete datatypes

From: Ian Horrocks <horrocks@cs.man.ac.uk>
Date: Tue, 23 Jan 2001 23:16:59 +0000 (GMT)
Message-ID: <14958.4331.822142.225901@excalibur.cs.man.ac.uk>
To: Stefan Decker <stefan@db.stanford.edu>
Cc: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>, heflin@cs.umd.edu, www-rdf-logic@w3.org
On January 23, Stefan Decker writes:
> At 03:57 PM 1/23/2001 -0500, Peter F. Patel-Schneider wrote:
> >We don't have to give semantics to the green-brown example, it just
> >falls out from the semantic definitions.  Also, it is hard to forbid the
> >double-property restrictions, again because of problems with RDF.
> >
> >peter
> Wouldn't a cardinality constraint for the restriction definition
> in the DAML specification do the job of forbidding double-property 
> restrictions?

There are a number of problems with this, but apart from anything else
it doesn't solve the basic problem outlined in my recent reply to

Received on Tuesday, 23 January 2001 18:22:55 UTC

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