- From: Veronique Malaise <vmalaise@few.vu.nl>
- Date: Wed, 18 Mar 2009 17:59:08 +0100
- To: Felix Sasaki <felix.sasaki@fh-potsdam.de>
- Cc: Raphaël Troncy <Raphael.Troncy@cwi.nl>, David Singer <singer@apple.com>, "public-media-annotation@w3.org" <public-media-annotation@w3.org>
- Message-Id: <B93E4CEC-F3A1-4DA3-8FA4-A5236852816B@few.vu.nl>
Hi Felix, all, I think that the first case that David was mentioning is typically answered by a "central authoritative" ontology or equivalence repository: for one query, it gives the possible properties in different vocabularies (XMP, MPEG7 etc); the second case is the skos modeling case *without* a "central authoritative" ontology or equivalence repository, which states that one property in one vocabulary is comparable (in some way) to a property in another vocabulary. But I might have misunderstood teh point... Véronique On Mar 18, 2009, at 5:34 PM, Felix Sasaki wrote: > Hello Raphael, > > I missed that one, sorry. I think the reason is that David was > asking whether we want to provide the functionality of a two way > mapping, and not specifically referring to the expressive power of > SKOS or another possible formalization which may be used to > implement the functionality. If I understand you right you just > explained the SKOS example, but did not ask for the functionality? > > Felix > > > 2009/3/18 Raphaël Troncy <Raphael.Troncy@cwi.nl> > Dear Felix, > > > everything we have done so far, including the mapping table, the toy > implementations of the API and the formalization example in SKOS > etc., are one way mapping, mostly using properties available in XMP > as the target of the mapping. That is, property A-1 from format A > can be mapped to property XMP-x. So far I have not seen anybody in > the Working Group asking for a two way mapping, so I regard this as > an unspoken consensus that we are working "only" on the one way > mapping. > > This is *not* exactly true. > In the case of the toy example of a possible mapping formalization > in SKOS, we have a two-ways mapping, since for example, the > skos:related property is owl:symmetric [1]. The skos:mappingRelation > might be reflexive, symmetric too. > > Raphaël > > [1] http://www.w3.org/TR/skos-primer/ > > > -- > Raphaël Troncy > CWI (Centre for Mathematics and Computer Science), > Science Park 123, 1098 XG Amsterdam, The Netherlands > e-mail: raphael.troncy@cwi.nl & raphael.troncy@gmail.com > Tel: +31 (0)20 - 592 4093 > Fax: +31 (0)20 - 592 4312 > Web: http://www.cwi.nl/~troncy/ >
Received on Wednesday, 18 March 2009 17:00:46 UTC