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Re: PROV-ISSUE-149 (revision-asserter): Why does revision record include an asserter? [Data Model]

From: Timothy Lebo <lebot@rpi.edu>
Date: Mon, 21 Nov 2011 15:08:57 -0500
Cc: public-prov-wg@w3.org
Message-Id: <6435D500-E7BB-488F-9854-D4487E5EFA98@rpi.edu>
To: Luc Moreau <L.Moreau@ecs.soton.ac.uk>

On Nov 11, 2011, at 7:55 AM, Luc Moreau wrote:

> Hi Simon,
> it's very much in line with the notion of responsibility in Yolanda's email yesterday.

Couldn't Revision be a type of Activity, where the "agent responsible for the new revision" (which may _not_ be the asserter) is the controlling agent?

If so, we can handle this using the core constructs.

I think that would also address Simon's concerns.

Regards,
Tim


> We are talking about the agent who is responsible for creating/deciding a new revision.
> But here, because it's a convenience relation, we don't make the process explicit.
> So, the agent responsible for the new revision doesn't have to be the asserter at all.
> Luc
> 
> On 11/11/2011 12:28 PM, Simon Miles wrote:
>> Hi Luc,
>> 
>> OK, but even if we distinguish "the agent who decides that a fact is
>> true" from "the agent who asserts that fact", then I don't see why
>> Revision is any different from any other assertion.
>> 
>> Thanks,
>> Simon
>> 
>> On 11 November 2011 12:22, Luc Moreau<L.Moreau@ecs.soton.ac.uk>  wrote:
>>   
>>> Hi Simon,
>>> It's not the case that the responsible agent is the one making the
>>> assertion.
>>> Luc
>>> 
>>> On 11/11/2011 12:01 PM, Provenance Working Group Issue Tracker wrote:
>>>     
>>>> PROV-ISSUE-149 (revision-asserter): Why does revision record include an asserter? [Data Model]
>>>> 
>>>> http://www.w3.org/2011/prov/track/issues/149
>>>> 
>>>> Raised by: Simon Miles
>>>> On product: Data Model
>>>> 
>>>> The Revision record contains its own asserter, but it is unclear why.
>>>> 
>>>> "Deciding whether something is made available as a revision of something else usually involves an agent who represents someone in the world who takes responsibility for declaring that the former is variant of the latter...
>>>> 
>>>> A revision record...
>>>> may refer to a responsible agent with identifier ag."
>>>> 
>>>> The agent appears to be just the entity deciding whether to make the assertion or not (whether one entity is a revision of another). This is no different from any other assertion: it is always in some asserter's perspective that the assertion is true. We don't include the asserter explicitly in Used, Generated, Derived or other records, so why do we for Revision?
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>>       
>>> --
>>> 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
>>> 
>>> 
>>> 
>>>     
>> 
>> 
>>   
> 
> -- 
> 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, 21 November 2011 20:11:28 UTC

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