- From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
- Date: Mon, 05 Mar 2012 21:42:47 +0000
- To: Timothy Lebo <lebot@rpi.edu>
- CC: Provenance Working Group WG <public-prov-wg@w3.org>
Hi Tim, Indeed, we no longer make the distinction between characterizing and non-characterizing attributes. In "proper" provenance, attributes are still very important, since they help describe a "partial state". Hence, some constraints exist around attributes: http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-dm-constraints.html#account-and-accountEntity (For instance, see 3rd bullet point). But I think we came to the conclusion that any rdf property for an entity is regarded as an attribute. Isn't it the answer to this issue? Cheers, Luc On 05/03/12 19:13, Timothy Lebo wrote: > Luc, > > The distinction between characterizing attributes and non-characterizing attributes has faded in the latest versions of the DM. > > Do you still have concerns about being able to find "frozen" attributes for a given entity? > > Thanks, > Tim > > > On Sep 2, 2011, at 4:52 AM, Provenance Working Group Issue Tracker wrote: > > >> PROV-ISSUE-89 (what-entity-attributes): How do we find the attributes of an entity? [Formal Model] >> >> http://www.w3.org/2011/prov/track/issues/89 >> >> Raised by: Luc Moreau >> On product: Formal Model >> >> The conceptual model defines an entity in terms of an identifier and a list of attribute-value pairs. It is indeed crucial for the asserter to identify the attributes that have been frozen in a given entity. >> >> Currently, the ontology does not seem to identify these attributes. >> >> To say that these attributes could be found by looking at all the properties for this entity does not work with an open world assumption. >> >> What mechanism do we have to identify these attributes? >> >> >> >> >> >> >> >
Received on Monday, 5 March 2012 21:44:48 UTC