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Re: Access and query TF - actions for WG

From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
Date: Mon, 20 Jun 2011 09:03:04 +0100
Message-ID: <EMEW3|fa206e97a5c0ccb66197aacb710b2669n5J93F08L.Moreau|ecs.soton.ac.uk|4DFEFEB8.5080807@ecs.soton.ac.uk>
To: Graham Klyne <GK@ninebynine.org>
CC: public-prov-wg@w3.org
Hi Graham,
Thanks for your comments. You didn't respond to this point, I think:

 >What is provenance-uri? is it unique? is provenance found at one and 
only one place? is there one and only one authority to provide 
provenance information about something?

(see 
http://www.w3.org/2011/prov/wiki/F2F1_Access_and_Query_Proposal#Comments)

When we see a product/advert/etc (e.g. a box of cereals in a 
supermarket), we can
scan its barcode, get its identity, and its provenance from the 
manufacturer.
Your solution seems to support that.

I would also like to go to a 'consumer group' offering a provenance 
service, and get a different
account of the provenance of that product. That's why I suggest to 
separate the identity of the
'thing' from the location where we retrieve provenance.

Of course, combing them (I and L) together provide a URI, from which 
provenance is retrieved.
So, on this point, we agree: no point inventing another protocol to 
retrieve provenance. The key
is to find where to retrieve provenance from.

Cheers,
Luc



On 06/20/2011 08:19 AM, Graham Klyne wrote:
> So that's it, I think my proposals cover the common cases.  I 
> recognize that I have not solved the case of a non-dereferenceable 
> provenance URI, of where the original server does not provide a 
> provenance URI, or where the server needs to know if provenance may be 
> required later when serving a resource.  But I see these as orthogonal 
> problems whose solutions we can better craft when we have a basic 
> common-case framework in place, and I can imagine possible solutions 
> for both of these (both essentially third-party information services 
> that do not need to be provenance-specific).  I was always clear that 
> my proposals were not exhaustive, but I do think they form a 
> sufficient basis for initial work.

-- 
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, 20 June 2011 08:03:58 GMT

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