W3C home > Mailing lists > Public > public-prov-wg@w3.org > March 2012

Re: PROV-ISSUE-89 (what-entity-attributes): How do we find the attributes of an entity? [Formal Model]

From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
Date: Mon, 05 Mar 2012 21:42:47 +0000
Message-ID: <EMEW3|4dcdd61282b87bcc2fb5b2d8cde62496o24LiE08L.Moreau|ecs.soton.ac.uk|4F553357.9010603@ecs.soton.ac.uk>
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 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Thursday, 26 April 2012 13:06:58 GMT