W3C home > Mailing lists > Public > public-prov-wg@w3.org > June 2011

Re: Access and query TF - actions for WG

From: Graham Klyne <GK@ninebynine.org>
Date: Mon, 20 Jun 2011 19:01:50 +0100
Message-ID: <4DFF8B0E.40300@ninebynine.org>
To: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
CC: public-prov-wg@w3.org
Luc Moreau wrote:
> OK, I can use HTTP HEAD in order to obtain provenance-URI for some 
> resource.
> This provenance-URI will be returned by the same service as the one 
> providing the resource.


> How can I obtain an alternative provenance from another service?  I 
> don't understand I
> would get an alternative provenance-URI?

I don't have a single immediate answer.  I can imagine several possible 
mechanisms (*), but I have no way to judge which is most appropriate.

And in any case, it is not obvious to me that we need a *standard* for such a 
mechanism (not saying we don't, just not sure that we do).

Therefore, in the spirit of earlier posts I would suggest this is a case for 
which we do not define a solution in a first draft, and then see what



Some possible mechanisms:

(a) ask known third party service providers
(b) the content provider could specify alernative provennce sources in the 
content (I previously said something about not using HTTP Link: and HTML <Link> 
together:  this might be a reason to not discourage that).
(c) Google (or semantic web equivalent) for the resource URI plus "provenance" 
or similar
(d) ask the resource provider (server) for alternative provenance sources

Without knowing more about a specific scenario, and in particular who in that 
scenario is expected to know what, it's not possible to recommend one of these 
over the others.  But my hunch is that (a) and (c) will prove most useful.
Received on Monday, 20 June 2011 21:48:19 UTC

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