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Re: PROV-ISSUE-191: Section (PROV-DM as on Nov 28) [prov-dm]

From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
Date: Mon, 19 Dec 2011 09:25:10 +0000
Message-ID: <EMEW3|c4944ff39aac1b237522b0dea1e5747enBI9PG08L.Moreau|ecs.soton.ac.uk|4EEF02F6.2050104@ecs.soton.ac.uk>
To: Provenance Working Group WG <public-prov-wg@w3.org>
Hi Satya,

All constraints have been rewritten and are now grouped in a single section.

I use the term 'ordering constraint' and (hopefully) no longer mention 
'temporal constraint'.

I am closing this issue, pending review.


On 12/07/2011 02:05 AM, Provenance Working Group Issue Tracker wrote:
> PROV-ISSUE-191: Section (PROV-DM as on Nov 28) [prov-dm]
> http://www.w3.org/2011/prov/track/issues/191
> Raised by: Satya Sahoo
> On product: prov-dm
> Hi,
> The following are my comments for Section of the PROV-DM (as on Nov 28):
> Usage Record
> 1. "For any entity, the following temporal constraint holds: the generation of an entity always precedes any of its usages."
> Comment: This is not a temporal constraint, since it only enforces a partial order between events.
> 2. "Given an activity record identified by a, an entity record identified by e, a set of attribute-value pairs attrs, and optional time t, if assertion used(a,e,attrs) or used(a,e,attrs,t) holds, then the following temporal constraint holds: the usage of the entity represented by entity record identified by e precedes the end of activity represented by record identified by a and follows its start."
> Comment: Similar to previous constraint, this is an event ordering constraint and not a temporal constraint. Especially for assertion used(a,e,attrs) where there is not time value explicitly associated with used.
> Thanks.
> Best,
> Satya

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 Monday, 19 December 2011 09:25:50 UTC

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