- From: OWL Working Group Issue Tracker <sysbot+tracker@w3.org>
- Date: Thu, 6 Dec 2007 03:03:05 +0000 (GMT)
- To: public-owl-wg@w3.org
ISSUE-86 (anonymous properties): RDF/XML serialization for anonymous inverse properties http://www.w3.org/2007/OWL/tracker/issues/ Raised by: Evren Sirin On product: Anonymous inverse properties can be used in ObjectPropertyAssertion axioms like ObjectPropertyAssertion(InverseObjectProperty(property) subject object ) According to [1], the RDF/XML serialization of this assertion will be subject _:p object . _:p owl11:inverseObjectPropertyExpression property . which is not valid RDF because RDF does not allow bnodes in the predicate position [2]. AFAICT this is the only place where anonymous inverse properties appear in the predicate position (all other uses get serialized into subject or object position). Disallowing anonymous inverses in ObjectPropertyAssertion would solve the problem (and would not affect the expressivity). [1] http://www.w3.org/2007/OWL/wiki/Mapping_to_RDF_Graphs [2] http://www.w3.org/TR/2004/REC-rdf-concepts-20040210/#section-triples
Received on Thursday, 6 December 2007 03:03:13 UTC