- From: Bernard Vatant <bernard.vatant@mondeca.com>
- Date: Tue, 24 Mar 2009 21:11:34 +0100
- To: SKOS <public-esw-thes@w3.org>
- CC: Johan De Smedt <johan.de-smedt@tenforce.com>, Thomas Francart <thomas.francart@mondeca.com>
Hello I'm not sure SKOS editors were aware of the behavior of various OWL ontology editors regarding the handling of the annotation properties (labels and documentation) in the current SKOS model. To declare rdfs:subPropertyOf relationships between annotation properties is definitely a OWL-Full feature at least in OWL 1.0. I can read in the reference document that this feature "makes SKOS more usable with the OWL 2 specification currently in development". Not sure about what will come out of OWL 2.0, but when using OWL 1.0 ontology editors, this situation leads to various inconsistent behaviours. Basically they do not support this kind of construction, and they get rid of it in different ways. Examples: SWOOP 2.3 latest (and last) release - I know this one is a bit old and no more under development, but I keep using it default of better free lightweight tool. The rdfs:subProperty relationships between annotation properties are simply ignored, and if you save the model, they are definitely off. Protégé 4.0 decides that "pure" annotation properties can't be the subject of assertions, so it considers all the annotation properties participating in the subproperty statements are object properties (but still annotation properties), which seems weird to me. There again, if the model is saved, properties are saved this way. Remarkably enough, none of those tools signal any error or trigger any warning when loading the file. Which is unfortunate indeed. It's been a daily routine in Mondeca to merge the SKOS model into wider customer ontologies we manage with the above editors. And I guess we are not alone in this case. I have no solid proposal to deal with that issue, but just wondering if others have stumbled on it. Cheers Bernard -- *Bernard Vatant *Senior Consultant Vocabulary & Data Engineering Tel: +33 (0) 971 488 459 Mail: bernard.vatant@mondeca.com <mailto:bernard.vatant@mondeca.com> ---------------------------------------------------- *Mondeca** *3, cité Nollez 75018 Paris France Web: www.mondeca.com <http://www.mondeca.com> Blog: Leçons de Choses <http://mondeca.wordpress.com/> ----------------------------------------------------**
Received on Tuesday, 24 March 2009 20:12:38 UTC