- From: Chris Mungall <cjmungall@lbl.gov>
- Date: Mon, 22 Nov 2010 08:50:57 -0800
- To: public-owl-comments@w3.org
- Cc: Alan Ruttenberg <alanruttenberg@gmail.com>
Hi All In owl2-mapping-to-rdf/, section 2.1, Translation of Axioms without Annotations, there is a sentence that reads: "In the mapping, each generated blank node (i.e., each blank node that does not correspond to an anonymous individual) is fresh in each application of a mapping rule." I'm not completely clear on what this means. Is there a more formal way of stating this? What counts as a distinct application? Is this the same as saying the RDF document /should/ not use blank node IDs more than once, i.e. structure sharing? Currently the OWL API parses: > <owl:Class rdf:about="http://x.org#a"> > <rdfs:subClassOf> > <owl:Restriction rdf:nodeID="bn0"> > <owl:onProperty rdf:resource="http://x.org#partOf"/> > <owl:someValuesFrom rdf:resource="http://x.org#x"/> > </owl:Restriction> > </rdfs:subClassOf> > </owl:Class> > > <owl:Class rdf:about="http://x.org#b"> > <rdfs:subClassOf rdf:nodeID="bn0"/> > </owl:Class> without complaint, and treats this the same as: SubClassOf(a ObjectSomeValuesFrom(partOf x)) SubClassOf(b ObjectSomeValuesFrom(partOf x)) should the parser in fact throw an error, or at least give a warning? Thanks for any clarification Chris
Received on Tuesday, 23 November 2010 08:42:38 UTC