- From: Ian Horrocks <horrocks@cs.man.ac.uk>
- Date: Thu, 6 Nov 2003 09:45:30 +0000
- To: "Geoff Chappell" <geoff@sover.net>
- Cc: <www-rdf-logic@w3.org>
Geoff, Thanks for the comments. We will take them into consideration in our next revision of the document. Ian On November 2, Geoff Chappell writes: > > FYI, Looks like the rdf examples are broken in the second doc you > referenced. I believe e.g: > > <owlr:argument1 rdf:about="#_y" /> > > should be: > > <owlr:argument1 rdf:resource="#_y" /> > > Also, IMHO, might be a good idea to follow usual conventions wrt > capitalization of class names - e.g. use <owlr:ClassAtom> instead of > <owlr:classAtom>. > > It's nice to see some movement on the rules front. > > regards, > > Geoff Chappell > > > -----Original Message----- > > From: www-rdf-logic-request@w3.org > [mailto:www-rdf-logic-request@w3.org] > > On Behalf Of Ian Horrocks > > Sent: Sunday, November 02, 2003 5:44 AM > > To: Graham Klyne > > Cc: www-rdf-logic@w3.org > > Subject: Re: Examples of OWL used for datatype inferencing? > > > > > > OWL's datatype support is currently fairly rudimentry and does not > > include any means of expressing the kinds of knowledge you > > describe. One way to do so, while still maintaining decidability (for > > OWL DL at least) would be to extend the language with n-ary datatype > > predicates (see, e.g., [1]). Another way would be to include > > arithmetic built-ins in an expressive extension such as horn rules > > (see, e.g., [2]), but this would almost certainly make the language > > undecidable. > > > > Ian > > > > [1] > > > http://www.cs.man.ac.uk/~horrocks/Publications/download/2003/PaHo03a.pdf > > [2] http://www.cs.man.ac.uk/~horrocks/DAML/Rules/ > > > >
Received on Thursday, 6 November 2003 04:48:08 UTC