- From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
- Date: Mon, 05 Mar 2012 22:14:45 +0000
- To: Timothy Lebo <lebot@rpi.edu>
- CC: Provenance Working Group WG <public-prov-wg@w3.org>
Hi Tim, I think that somewhere in the prov-o html document, there should be a section that talks about "proper" provenance (or whatever its name is), and discusses attributes. So, as long as we remember to discuss this, I think we can close the issue. Luc On 05/03/12 22:06, Timothy Lebo wrote: > On Mar 5, 2012, at 4:42 PM, Luc Moreau wrote: > > >> 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). >> > Yes, the 3rd bullet and "It is not permitted to add new attributes to a given entity" in the note. > > >> 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? >> > I hope that it is. I am comfortable with the phrasing in the DM. > Any rdf property outside of the prov namespace that describes and Entity is "fixed". > (as you noted, we can "use" it again, so that would make a new attribute within the prov namespace but that did not affect the partial state.) > > > Does this mean we can close the issue? Do we need the DM to say something further in light of this ISSUE? > > Thanks, > -Tim > > > >> 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 22:15:30 UTC