Re: PROV-ISSUE-193: Section 5.3.2.2 (PROV-DM as on Nov 28) [prov-dm]

Hi Luc,
The new relations wasStartedBy and wasEndedBy in DM TPWD have resolved this
issue. I am fine with closing this issue (I will raise a separate issue for
the confusion over wasStartedBy).

Thanks.

Best,
Satya

On Thu, Dec 8, 2011 at 5:04 AM, Luc Moreau <L.Moreau@ecs.soton.ac.uk> wrote:

> Hi Satya,
>
> On 12/07/2011 02:09 AM, Provenance Working Group Issue Tracker wrote:
>
>> PROV-ISSUE-193: Section 5.3.2.2 (PROV-DM as on Nov 28)  [prov-dm]
>>
>> http://www.w3.org/2011/prov/**track/issues/193<http://www.w3.org/2011/prov/track/issues/193>
>>
>> Raised by: Satya Sahoo
>> On product: prov-dm
>>
>> Hi,
>> The following are my comments for Section 5.3.2.2 of the PROV-DM (as on
>> Nov 28):
>>
>> 5.3.2.2 Start and End Records
>> 1. A start record is a representation of an agent starting an activity.
>> An end record is a representation of an agent ending an activity.
>>
>> Comment: The names of these records should explicitly include "Activity",
>> since on their own a "start" and "end" record may mean start of an event
>> also?
>>
>>
>
> Of course we can change the name, but I don't see what confusion there is.
>  Where did we mention start of an event?
> This is not really meaningful in this context.
>
>  It is not clear why the WG should create "start" and "end" records for
>> agent starting and ending an activity. What about "pausing", "re-starting",
>> "increasing rate of an activity" (e.g. experiment rate was increased by
>> addition of reagent by researcher) to name a few association types between
>> activity and agent?
>>
>>
>>
>
> Ultimately, underpinning prov-dm is a notion of interval, for entities and
> for activities.
> I think it's important for prov-dm to have construct to explain what
> brings them about. Hence the requirement for starting/ending activities.
>
> There is nothing in the model related to paused/unpause state, activity
> rate, etc. They can be introduced with application specific attributes,
> and specialisation of wasAssociatedWith.
>
>
>  Thanks.
>>
>> Best,
>> Satya
>>
>>
>>
>
> Luc
>
>>
>>
>>
>
> --
> 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<http://www.ecs.soton.ac.uk/~lavm>
>
>
>