- From: pat hayes <phayes@ai.uwf.edu>
- Date: Tue, 4 Mar 2003 12:23:31 -0500
- To: Leo Obrst <lobrst@mitre.org>
- Cc: "Roger L. Costello" <costello@mitre.org>, www-webont-wg@w3.org
>For the second case, OWL DL/Lite, is it true that you can't make it? Or that >it would be defined as rdf:Property, but that the latter's subclasses (owl: >DataatypeProperty and owl: ObjectProperty) are disjoint, hence could cause >real problems? > >If you had such a definition, i.e., defined to be rdf:Property, in an >ontology, would that automatically push you into OWL FULL? The answer to that question depends on fine details of decisions currently being taken (I am sitting in the very meeting as I type) about exactly how OWL-DL/RDF syntax is going to be defined. Do not expect the answer to be simple or easy to understand. Pat Hayes >Leo > >Dan Connolly wrote: > >> On Sun, 2003-03-02 at 07:02, Roger L. Costello wrote: >> > Hi Folks, >> > >> > Suppose that I want to define a property without an rdfs:range. Thus, >> > the property can have any value - a string (datatype) value or an object >> > value. Right? >> >> In OWL Full, yes... >> >> > Then how do I define the property - as an >> > owl:ObjectProperty or as an owl:DatatypeProperty? >> >> neither. owl:ObjectProperty excludes string values, >> and owl:DatatypeProperty excludes non-datatype values. >> >> So you can't make an OWL DL/Lite ontology with > > such a beast. >> >> In OWL Full, it's just an ordinary rdf:Property. >> >> > /Roger >> -- >> Dan Connolly, W3C http://www.w3.org/People/Connolly/ > >-- >_____________________________________________ >Dr. Leo Obrst The MITRE Corporation >mailto:lobrst@mitre.org Intelligent Information Management/Exploitation >Voice: 703-883-6770 7515 Colshire Drive, M/S H305 >Fax: 703-883-1379 McLean, VA 22102-7508, USA -- --------------------------------------------------------------------- IHMC (850)434 8903 or (650)494 3973 home 40 South Alcaniz St. (850)202 4416 office Pensacola (850)202 4440 fax FL 32501 (850)291 0667 cell phayes@ai.uwf.edu http://www.coginst.uwf.edu/~phayes s.pam@ai.uwf.edu for spam
Received on Tuesday, 4 March 2003 12:23:36 UTC