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Re: PROV-ISSUE-521: Data Model Section 5.3.3 [prov-dm]

From: Luc Moreau <l.moreau@ecs.soton.ac.uk>
Date: Wed, 26 Sep 2012 14:24:31 +0100
Message-ID: <EMEW3|b11c2e5ce7798f6efaf7b4d1fbcf72ebo8PEOV08l.moreau|ecs.soton.ac.uk|5063020F.4050409@ecs.soton.ac.uk>
To: Paul Groth <p.t.groth@vu.nl>
CC: "public-prov-wg@w3.org" <public-prov-wg@w3.org>
Hi Paul,
I don't see this as a requirement for a prov:subactivityOf relation. Our 
response with dcterms:hasPart
still holds.
Luc

On 26/09/2012 14:20, Paul Groth wrote:
> Hi Luc,
>
> I get the response.... but there's a suggested modelling approach,
> namely, break down the activity into two activity, suggests that then
> you have subactivites..... Akkkk
>
> cheers
> Paul
>
> On Tue, Sep 25, 2012 at 3:27 PM, Luc Moreau<l.moreau@ecs.soton.ac.uk>  wrote:
>    
>> Hi all,
>>
>> Find below a draft response to this issue, available on the wiki at:
>> http://www.w3.org/2011/prov/wiki/ResponsesToPublicComments#ISSUE-521_.28Responsibility_Activity.29
>>
>> Feedback appreciated,
>> Regards,
>> Luc
>>
>> ISSUE-521 (Responsibility Activity)
>>
>> Original email:
>> http://lists.w3.org/Archives/Public/public-prov-wg/2012Sep/0111.html
>> Tracker: http://www.w3.org/2011/prov/track/issues/521
>> Group Response
>>
>> PROV agents bear responsibility for activities taking place, entities being
>> generated, and other agents.
>> PROV agents MAY be entities or activities
>> Given this, it is legal to write the following, in which the type of a2 and
>> a1 is inferred to be agent.
>>
>> activity(a1)
>> activity(a2)
>> actedOnBehalfOf(a2,a1)
>>
>> The group has provided its answer to ISSUE-503
>> PROV associations are not temporal relations. Instead, prov-constraints
>> define ordering constraints that are implied by associations. The agent in
>> an association is expected to have some overlap with the activity. Likewise,
>> for attribution, the agent exist before this entity was generated.
>> If an application, it is necessary to express that an activity is associated
>> with agent ag1 during interval (evt1-evt2) and then with agent ag2 during
>> interval (evt2-evt3), the approach is to model this with two activities, one
>> for the first interval, or one for the second interval.
>>
>> References:
>>
>> Type inference:
>> http://www.w3.org/TR/2012/WD-prov-constraints-20120911/#typing
>> Adopt plan response:
>> http://www.w3.org/2011/prov/wiki/ResponsesToPublicComments#ISSUE-503_.28adopt_plan.29
>> Association ordering constraints:
>> http://www.w3.org/TR/2012/WD-prov-constraints-20120911/#wasAssociatedWith-ordering_text
>>
>> Changes to the document: http://dvcs.w3.org/hg/prov/rev/e89828e2a81c
>> Original author's acknowledgement:
>>
>>
>>
>> On 10/09/2012 09:48, Provenance Working Group Issue Tracker wrote:
>>
>> PROV-ISSUE-521: Data Model Section 5.3.3   [prov-dm]
>>
>> http://www.w3.org/2011/prov/track/issues/521
>>
>> Raised by: Luc Moreau
>> On product: prov-dm
>>
>>
>> http://www.w3.org/2011/prov/wiki/LC_Feedback#Data_Model_Section_5.3.3
>>
>> ISSUE-463
>>
>> By definition, agents can be both entities and activities (section 2.1.3).
>> Can activities be responsible for other activities, or can only entities be
>> assigned responsibility?
>>
>> Similarly, can activities adopt a plan when acting as an agent, or can only
>> entity agents adopt plans?
>>
>> Can associations be valid for a window of time for a given activity? For
>> example, several agents are responsible for the activity of preparing and
>> serving food in a restaurant (server, cook, bartender), but not all of them
>> are responsible for the entire time the activity is active. To support this,
>> start and end times should be added to Associations.
>>
>>
>>
>>
>>
>>
>>
>> --
>> Professor Luc Moreau
>> Electronics and Computer Science   tel:   +44 23 8059 4487
>> University of Southampton          fax:   +44 23 8059 2865
>> Southampton SO17 1BJ               email: l.moreau@ecs.soton.ac.uk
>> United Kingdom                     http://www.ecs.soton.ac.uk/~lavm
>>
>>      
>
>
>    

-- 
Professor Luc Moreau
Electronics and Computer Science   tel:   +44 23 8059 4487
University of Southampton          fax:   +44 23 8059 2865
Southampton SO17 1BJ               email: l.moreau@ecs.soton.ac.uk
United Kingdom                     http://www.ecs.soton.ac.uk/~lavm
Received on Wednesday, 26 September 2012 13:25:03 GMT

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