- From: Raphael Volz <volz@aifb.uni-karlsruhe.de>
- Date: Tue, 2 Sep 2003 17:20:31 +0200
- To: "Www-Webont-Wg@W3. Org" <www-webont-wg@w3.org>
Hi - the dublin core elements enjoy a wide popularity as annotation properties. Since the RDF syntax for Dublin Core is based on a RDF Schema, all ontologies making use of that vocabulary are per definition OWL Full. I have edited the original definitions and created some OWL (Lite/DL, Full) ontologies that allow to use Dublin Core as annotation properties within OWL Lite/DL and Full ontologies without breaking the species through use of untyped properties and wrongly typed properties. While doing this some unclarities with respect to rdfs:subPropertyOf arises, which is used in DC between properties. According to my understanding of the abstract syntax, it is not possible to declare super properties of annotation properities. Why is this so, what is the intention behind this decision ? Since annotation properties are pairwise disjoint from object and datatype properties allowing a super property axiom (which could be used/useful in OWL Full) appears to be no problem, right ? Btw., the ontologies are available here: OWL Lite/DL Dublin Core: http://www.aifb.uni-karlsruhe.de/WBS/rvo/ontologies/dublincore.owl http://www.aifb.uni-karlsruhe.de/WBS/rvo/ontologies/terms.owl http://www.aifb.uni-karlsruhe.de/WBS/rvo/ontologies/dcmitype.owl OWL Full Dublin Core: http://www.aifb.uni-karlsruhe.de/WBS/rvo/ontologies/dublincore-owlfull.owl http://www.aifb.uni-karlsruhe.de/WBS/rvo/ontologies/terms-owlfull.owl http://www.aifb.uni-karlsruhe.de/WBS/rvo/ontologies/dcmitype-owlfull.owl I have decided to factor out all statements that make the DC declarations OWL Full into separate ontologies and include the OWL Lite/DL version via owl:imports. This appears to be a good design pattern for designing OWL Full ontologies since maximum reuse for non-Full "agents" is guaranteed. Mit freundlichen Grüßen, Best regards, Raphael Volz -- Raphael Volz Institut AIFB, Universität Karlsruhe http://www.aifb.uni-karlsruhe.de/WBS/rvo volz@aifb.uni-karlsruhe.de WIM, FZI Karlsruhe http://www.fzi.de/wim volz@fzi.de Fax: +49-1212-5-470-17-365
Received on Tuesday, 2 September 2003 11:21:49 UTC