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Re: PROV-ISSUE-46 (where-is-D-in-provenance): Where do I find document D in provenance [Accessing and Querying Provenance]

From: Paul Groth <p.t.groth@vu.nl>
Date: Thu, 28 Jul 2011 13:14:18 +0200
Message-ID: <4E31448A.40107@vu.nl>
To: Graham Klyne <GK@ninebynine.org>
CC: Provenance Working Group WG <public-prov-wg@w3.org>
Hi Graham,

I think you identified the crux of the matter in this paragraph:

> The specific point raised about "where do I find a BOB assertion" is, I think, a
> matter for the model.  If one has located and obtained the provenance associated
> with a web resource, it's not the job of the access mechanism to figure out what
> it actually describes.  Personally, I think the whole sideshow about BOBs and
> suchlike is just a big unnecessary distraction, but the point about being clear
> about what is described by provenance remains important.

As far as I understand, you mean the PAQ just tells you where to find 
some provenance information associated with a particular URL, correct? 
where the association is rather loose. Then you have to use the model to 
tease apart what the provenance information "actually" is about.

For example, if several versions of the same document appeared at the 
same url (i.e. the new york times homepage gets updated). Then to 
determine that I would just say well the provenance is associated with 
this url is over here. Then you I would look at the provenance 
information and by knowing the model know what the current version is 
and its provenance... or if it's really provenance about the ads on the 
page, I would inspect the provenance information some more and be able 
to figure that out.

Is that correct?

Thanks,
Paul
Received on Thursday, 28 July 2011 11:17:06 GMT

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