Thanks. I'm not familiar with "the usual trick of indirection". Are there some nice pointers to explanations and examples of how it can be used to accomplish varoius things?
Thanks Michael ========================== Michael Uschold M&CT, Phantom Works 425 373-2845 [EMAIL PROTECTED] ========================== ---------------------------------------------------- COOL TIP: to skip the phone menu tree and get a human on the phone, go to: http://gethuman.com/tips.html -----Original Message----- From: Danny Ayers [mailto:[EMAIL PROTECTED] Sent: Saturday, August 04, 2007 2:44 AM To: Uschold, Michael F Cc: [EMAIL PROTECTED]; semediawiki-user@lists.sourceforge.net; [EMAIL PROTECTED]; Clark, Peter E; Kitzmiller, Ted; Jones, David H; Folger, Deborah H; Murray, William R Subject: Re: [swikig] Semantics of MW Categories and OWL On 04/08/07, Uschold, Michael F <[EMAIL PROTECTED]> wrote: > > > > SUMMARY: > > The semantics of categories in Media Wiki seems to be too general, so > that it is not amenable to linking up with OWL. With OWL DL, I believe you're right. But this doesn't rule out using parts of OWL (e.g. <categoryA> owl:sameAs <categoryB>) under OWL Full. It may be possible to apply the usual trick of indirection to get around the problem you describe. I've not looked closely, but categories could perhaps be wrapped into SKOS [1] concepts, so the reasoning would be over properties like broader/narrower, without the potential inconsistencies brought on through using subclass relationships directly. (Not unrelated is the Tag Ontology [2] which uses SKOS to cover folksonomy tagging). I don't believe it's going to solve the kind of problem you describe overnight (especially since there appear to be other aspects that are further from RDF/RDFS) but there may be hope on the horizon with OWL 1.1: [[ In OWL 1.1 a name (such as Person) can be used as any or all of an individual, a class, or a property. The computational problems that would arise if this were treated as in RDF are avoided by ensuring that no aspect of the use of the name as an individual has any effect on the meaning of the name as a class. Such a treatment of metamodeling is often called punning. ]] http://www.w3.org/Submission/2006/SUBM-owl11-overview-20061219/#2.4 Cheers, Danny. [1] http://www.w3.org/TR/swbp-skos-core-guide/ [2] http://www.holygoat.co.uk/projects/tags/ -- http://dannyayers.com ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Semediawiki-user mailing list Semediawiki-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/semediawiki-user
