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Re: provenance of provenance

From: Satya Sahoo <satya.sahoo@case.edu>
Date: Thu, 17 May 2012 11:57:11 -0400
Message-ID: <CAOMwk6wbtHMNGhZ9NnPC0OfMOBWz3-w-Gjg60D9jic48vy4yYA@mail.gmail.com>
To: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
Cc: public-prov-wg@w3.org
Hi Luc,

In a sense, the approach is similar to Tim's approach
> http://www.w3.org/2011/prov/wiki/Using_graphs_to_model_Accounts,
> where he was using a hash as the graph identifier. If the descriptions
> change, so does the hash. I think using hash is too strong
> requirement, hence, we have regular identifiers.  (A secure version could
> use them).
>
> If an application does not wish to distinguish between two bundles (note:
> a bundle does not have state!), ... then
> it shouldn't produce bundles.  There is no requirement to generate bundles.
>
> I did not understand - is there a construct other than bundle for handling
multiple provenance assertions together? If bundle is the only construct
available then we need to avoid "over-specifying" it.


>
>  2. I am not sure why provenance location, a function for accessing
> provenance and very often application/domain dependent, should be part of
> DM? "A provenance locator is information that helps locate provenance
> descriptions. It may identify a service, or may consist of a URI where
> provenance descriptions can be found." What if location of provenance of
> an entity or activity is written down as set of instructions on file (or
> paper) - provenance of a car is located in a file in the filing cabinet of
> manufacturer? In this case, the application cannot use the currently
> defined hasProvenanceIn construct.
>
>
> There is no claim that we covering all possible ways of accessing
> provenance. That's why we have attributes to allow other ways
> to be expressed (you could encode there your instructions to find a paper
> for instance).
>
So, "target", "service", "provenance" (very uncomfortable with this label
btw) are just specific examples of the generic "attributes" - this is not
clear from the current signature.

Thanks.

Best,
Satya


>
>
> Luc
>
>
>
>  Thanks.
>
>  Best,
> Satya
>
> On Thu, May 10, 2012 at 5:14 PM, Luc Moreau <L.Moreau@ecs.soton.ac.uk>wrote:
>
>>
>> Dear all,
>>
>> We are seeking feedback on text regarding bundles (allowing provenance
>> of provenance to be expressed).
>>
>>
>> http://dvcs.w3.org/hg/prov/raw-file/default/model/working-copy/wd6-bundle.html
>>
>> It is addressing ISSUES-257, ISSUE-260, ISSUE-88, ISSUE-297.
>> We will respond to these issues individually, shortly.
>>
>> Cheers,
>> 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
>
>
Received on Thursday, 17 May 2012 15:57:42 GMT

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