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Re: PROV-ISSUE-245 (TLebo): entity was used -> __started__ to be used

From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
Date: Fri, 23 Mar 2012 13:53:38 +0000
Message-ID: <EMEW3|4dc7ef563776c41c8131d8806d8e73e6o2MDrg08L.Moreau|ecs.soton.ac.uk|4F6C8062.1090807@ecs.soton.ac.uk>
To: public-prov-wg@w3.org
Hi Tim and Khalid,

Tim's suggestion was implemented [1].

Regarding Khalid's suggestion, it is intentionally that we are not more 
specific
about usage.

DM4's section 2 says:
/Usage examples include a procedure beginning to consume an argument, a 
service starting to read a value on a port, a program beginning to read 
a configuration file, or the point at which an ingredient, such as eggs, 
is being added in a baking activity. Usage may entirely consume an 
entity (e.g. eggs are no longer available after being added to the mix); 
alternatively, a same entity may be used multiple times, possibly by 
different activities (e.g. a file on a file system can be read 
indefinitely).
/

Given this, we propose to close this issue, pending review.

[1] 
http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-dm.html#usage.time

Regards,
Luc

On 02/07/2012 05:11 PM, Khalid Belhajjame wrote:
> On 06/02/2012 22:06, Provenance Working Group Issue Tracker wrote:
>> PROV-ISSUE-245 (TLebo): entity was used ->  __started__ to be used
>>
>> http://www.w3.org/2011/prov/track/issues/245
>>
>> Raised by: Timothy Lebo
>> On product:
>>
>> I propose to rephrase:
>>
>>      time: an optional "usage time" t, the time at which the entity 
>> was used;
>>
>> to:
>>
>>      time: an optional "usage time" t, the time at which the entity 
>> started to be used;
>
> I agree we need to change teh definitition of usage time, but I am not 
> sure the rephrasing you suggest is clearer. What does the "the time at 
> which the entity started to be used" refers to? Perhaps, we can use 
> instead something like
>
>  time: an optional "usage time" t, the time at which the entity was 
> accessed by the activity;
>
> Or something in these lines.
>
> Thanks, khalid
>
>
>
>>
>> Thanks,
>> Tim
>>
>>
>> quote:
>>
>> A usage record, written used(id,a,e,t,attrs) in PROV-ASN, has the 
>> following constituent:
>>
>>      id: an optional identifier id identifying the usage record;
>>      activity: an identifier a for an activity record, which 
>> represents the consuming activity;
>>      entity: an identifier e for an entity record, which represents 
>> the entity that is consumed;
>>      time: an optional "usage time" t, the time at which the entity 
>> was used;
>>
>>
>>
>>
>
>

-- 
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 Friday, 23 March 2012 13:54:09 GMT

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