Re: PROV-ISSUE-522: Data Model Section 5.3.4 [prov-dm]

Dear all,

Here is a draft response for issue-522,

Feedback appreciated.

      ISSUE-522 (Activity Delegation)

    * Original email:
    * Tracker:
    * Group Response
          o Our response to ISSUE-521 partly addresses this issue.
          o PROV delegations are not temporal relations. Instead,
            prov-constraints define ordering constraints that are
            implied by delegations: the responsible agent has to precede
            or has some overlap with the subordinate agent.
          o If in an application, it is necessary to express that a
            delegation takes place over an interval(evt1-evt2) and
            followed by a delegation during interval (evt2-evt3), the
            approach is to model this with two activities, one for the
            first interval, or one for the second interval, and two
            relations actedOnBehalfOf, one for each activity.
    * References:
          o Delegation ordering constraints:
          o Issue raised against prov-constraints:
    * Changes to the document: none, but issue raised against
    * Original author's acknowledgement:


On 10/09/2012 09:49, Provenance Working Group Issue Tracker wrote:
> PROV-ISSUE-522: Data Model Section 5.3.4   [prov-dm]
> Raised by: Luc Moreau
> On product: prov-dm
> ISSUE-463
> See comments for section 5.3.3. Can activities delegate to other agents, or can only entity agents delegate to other entities? (I assume the intent is to restrict delegation to only entity agents.)
> Delegations are only valid for a given window of time, so start and end times should be added.

Professor Luc Moreau
Electronics and Computer Science   tel:   +44 23 8059 4487
University of Southampton          fax:   +44 23 8059 2865
Southampton SO17 1BJ               email:
United Kingdom           

Received on Tuesday, 25 September 2012 13:47:24 UTC