- From: pat hayes <phayes@ihmc.us>
- Date: Thu, 10 Jul 2003 14:01:17 -0500
- To: Christopher Welty <welty@us.ibm.com>
- Cc: www-webont-wg@w3.org
- Message-Id: <p0600120bbb334899f674@[10.0.100.11]>
>GIVEN: > ><owl:class rdf:ID="ManufacturedThing" /> ><owl:class rdf:ID="NaturalThing" /> ><owl:ObjectProperty rdf:ID="madeFrom"> > <rdfs:domain rdf:resource="#ManufacturedThing" /> > <rdfs:range rdf:resource="#NaturalThing" /> ></owl:ObjectProperty> > > >DOES THIS: > ><owl:Class rdf:ID="Wine"> > <rdfs:subClassOf> > <owl:Restriction> > <owl:onProperty rdf:resource="#madeFrom"/> > <owl:allValuesFrom rdf:resource="#Grape" /> > </owl:Restriction> > </rdfs:subClassOf> ></owl:Class> > > >ENTAIL THIS?: > ><owl:class rdf:resource="#Wine"> > <rdfs:subclass rdf:resource="#ManufacturedThing" /> ></owl:class> ><owl:class rdf:resource="#Grape"> > <rdfs:subclass rdfs:resource="#NaturalThing" /> ></owl:class> Entail in what sense? Obviously its OWL-entailed since we havnt changed the OWL semantics; and its not RDFS-entailed since it depends on the meaning of some OWL logical vocabulary. I expect what you mean is, would it be OWL-entailed if OWL used the weaker RDFS conditions on rdfs:range , rdfs:domain and rdfs:subClassOf? That would depend on exactly how the weaker OWL semantics described the relationship between subClass and restriction class definitions, but the likeliest answer is that it would not be entailed. >Certainly this holds in the interpretation. That depends on how you interpret 'subClassOf'. In RDFS, the class extension of A being a subset of that of B isn't a sufficient condition for A being an rdfs:subClassOf B. Pat -- --------------------------------------------------------------------- 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@ihmc.us http://www.ihmc.us/users/phayes
Received on Thursday, 10 July 2003 15:01:20 UTC