- From: Pierre-Antoine Champin <pierre-antoine.champin@liris.cnrs.fr>
- Date: Tue, 26 May 2009 14:24:01 +0100
- To: Media Annotation <public-media-annotation@w3.org>
- Message-ID: <4A1BED71.4080204@liris.cnrs.fr>
Following Sylvia's answer to the question about our terminology, I propose that : we replace the 3 definitions of media entity, resource and representation by a single definition of 'media resource', that would look like: Media Resource: any Resource (as defined by [URI]) related to a media content. Note that [URI] points out that a resource may be retrievable or not. Hence, this term encompasses the abstract notion of a movie (e.g. Notting Hill) as well as the binary encoding of this movie (e.g. the MPEG-4 encoding of Notting Hill on my DVD), or any intermediate levels of abstraction (e.g. the director's cut or the plane version of Notting Hill). Although some ontologies (FRBR, BBC) define concepts for different such levels of abstraction, our ontology does not commit to any classification of media resources. I think the benefits are the following: 1) we drop the controversial term 'entity' 2) we are compatible with MFWG (who refer to [URI] as well) 3) we acknowledge the fact that there are several levels of abstraction, but at the same time... 4) we are consistent with our decision not to formalize them (w.r.t. that, 'resource' vs. 'representation' was such a formalization, though minimal) I recall below the definition of 'resource' from [URI]. Note that they use (without defining it, though), the term 'entity', which is somewhat more "concrete" than 'resource'. I believe that this definition provides the generality that we are seeking with 'entity', and I guess the more restrictive meaning that we gave to 'resource' in the current definition is what makes Sylvia think it is incompatible with the definition below. pa from [URI] http://www.faqs.org/rfcs/rfc2396.html : Resource A resource can be anything that has identity. Familiar examples include an electronic document, an image, a service (e.g., "today's weather report for Los Angeles"), and a collection of other resources. Not all resources are network "retrievable"; e.g., human beings, corporations, and bound books in a library can also be considered resources. The resource is the conceptual mapping to an entity or set of entities, not necessarily the entity which corresponds to that mapping at any particular instance in time. Thus, a resource can remain constant even when its content---the entities to which it currently corresponds---changes over time, provided that the conceptual mapping is not changed in the process
Received on Tuesday, 26 May 2009 13:24:51 UTC