On 19 Dec 2009, at 00:35, Peter DeVries wrote: > I noticed the following while looking at the DBpedia ontology in > Protege > with the following resource: > > http://dbpedia.org/resource/Cougar > > has the following > > http://dbpedia.org/property/statusRef > > As both a object property and a data property.
In the DBpedia ontology, it is simply declared as an rdf:Property, neither as an objectProperty nor as a datatypeProperty. Hence it's ok for the property to have both literal and resource objects. You are probably using a tool that is designed for OWL DL, not for RDF or normal OWL. In OWL DL, properties *must* be declared as datatypeProperty or objectProperty. In practice, this means that you cannot use non-DL data with DL tools unless you do some preparation of the data first. I don't have statistics, but I would expect the vast majority of RDF data that you find on the Web to be non OWL DL compliant. Best, Richard > > This causes Protege's Pellet to generate an error from interpreting > this > triple in terms of a "literal" > > <rdf:Description > rdf:about="http://dbpedia.org/resource/Cougar";><dbpprop:statusRef > xmlns:dbpprop="http://dbpedia.org/property/"; rdf:resource=" > http://dbpedia.org/resource/Cougar/statusRef/IUCN2008"/></ > rdf:Description> > > This seems to suggest that "statusRef" should be made only a object > property? > > Or is this a bug in Protege or Pellet? > > Any thoughts? > > - Pete > > ---------------------------------------------------------------- > Pete DeVries > Department of Entomology > University of Wisconsin - Madison > 445 Russell Laboratories > 1630 Linden Drive > Madison, WI 53706 > GeoSpecies Knowledge Base > About the GeoSpecies Knowledge Base > ------------------------------------------------------------ > ------------------------------------------------------------------------------ > This SF.Net email is sponsored by the Verizon Developer Community > Take advantage of Verizon's best-in-class app development support > A streamlined, 14 day to market process makes app distribution fast > and easy > Join now and get one step closer to millions of Verizon customers > http://p.sf.net/sfu/verizon-dev2dev > _______________________________________________ > Dbpedia-discussion mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
