- From: Martin Hepp <martin.hepp@ebusiness-unibw.org>
- Date: Thu, 19 May 2011 10:04:34 +0200
- To: Enrico Franconi <franconi@inf.unibz.it>
- Cc: Bernard Vatant <bernard.vatant@mondeca.com>, Hugh Glaser <hg@ecs.soton.ac.uk>, Michael F Uschold <uschold@gmail.com>, "<semantic-web@w3.org>" <semantic-web@w3.org>
All: For GoodRelations, it is completely irrelevant whether the gr:UnitPriceSpecification instance (or any other instance) has a URI or is a blank node. It is just that, same as weak entities in ER modeling or local variables in data structures, unit price specifications are useless without knowing the local context, i.e., the gr:Offering they are attached to. Best Martin On May 18, 2011, at 10:27 PM, Enrico Franconi wrote: > > On 18 May 2011, at 19:47, Bernard Vatant wrote: > >> Beyond vocabulary issues, seems to me that in OWL you can't express the constraint that instances of a given class should be anonymous resources. > > ? Neither can you in RDF(S). > --e.
Received on Thursday, 19 May 2011 08:05:03 UTC