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Re: PROV-ISSUE-156 (TLebo): information flow ordering record - no temporal constraints? [Data Model]

From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
Date: Wed, 30 Nov 2011 13:12:53 +0000
Message-ID: <EMEW3|58a32ef405084b6727b53d6fafa198b9nAYDCu08L.Moreau|ecs.soton.ac.uk|4ED62BD5.8000307@ecs.soton.ac.uk>
To: public-prov-wg@w3.org
Hi Tim,

The latest WD contains wasInformedBy-ordering listing the temporal 
constraint
associated with wasInformedBy.

I am proposing to close the issue pending review.
Regards,
Luc

On 11/21/2011 04:07 PM, Luc Moreau wrote:
> Hi Tim,
> You're right, a temporal interpretation constraint is missing.
> I have added an explicit issue in the text. Hopefully, I will add it
> later this week.
> Luc
>
> On 11/21/2011 03:06 PM, Provenance Working Group Issue Tracker wrote:
>    
>> PROV-ISSUE-156 (TLebo): information flow ordering record - no temporal constraints? [Data Model]
>>
>> http://www.w3.org/2011/prov/track/issues/156
>>
>> Raised by: Timothy Lebo
>> On product: Data Model
>>
>> According to 6.3 Activity Ordering Record
>>
>> "wasInformedBy" is:
>>
>> "An information flow ordering record is a representation that an entity was generated by an activity, before it was used by another activity."
>>
>> But the only constraint does not include the temporal aspects described above:
>>
>> "Given two activity records identified by a1 and a2, the record wasInformedBy(a2,a1) holds, if and only if there is an entity record identified by e and sets of attribute-value pairs attrs1 and attrs2, such that wasGeneratedBy(e,a1,attrs1) and used(a2,e,attrs2) hold."
>>
>>
>> Does the temporal constraint fall out of constraints that apply to wasGeneratedBy and used?
>> * If so, could this be made explicit?
>> * If not, can "attrs1" and "attrs2" be elaborated to include the "time used" and "time generated" AND their constrained ordering?
>>
>> Thanks,
>> Tim
>>
>>
>>
>>
>>
>>      
>    

-- 
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, 30 November 2011 13:13:34 GMT

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