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Re: PROV-ISSUE-43 (derivation-time): Deriviation should have associated time [Conceptual Model]

From: Khalid Belhajjame <Khalid.Belhajjame@cs.man.ac.uk>
Date: Sun, 24 Jul 2011 12:06:38 +0100
Message-ID: <4E2BFCBE.6070905@cs.man.ac.uk>
To: Provenance Working Group WG <public-prov-wg@w3.org>
CC: Provenance Working Group Issue Tracker <sysbot+tracker@w3.org>

Hi Paul,

I think that "Use" and "Generation" should be associated with time.
However, I don't think we should associate time to derivation.
I would argue that isDerivedFrom(b1,b2) holds all time. Although b1 and 
b2 may no longer exist, isDerivedFrom(b1,b2) is still valid.

Thanks, khalid


On 23/07/2011 16:46, Provenance Working Group Issue Tracker wrote:
> PROV-ISSUE-43 (derivation-time): Deriviation should have  associated time [Conceptual Model]
>
> http://www.w3.org/2011/prov/track/issues/43
>
> Raised by: Paul Groth
> On product: Conceptual Model
>
> Other relationships have time associated with them (e.g. use, generation, control)
>
> There is no optional time associated with derivation.
>
> Suggested resolution is to add the following to the definition of isDerivedFrom:
>
> -  May contain a "derived from time" t, the time or time intervals when b1 was derived from b2
>
> Example:
> isDerivedFrom(b1,b2, t)
>
>
>
>
>
>
Received on Sunday, 24 July 2011 11:07:05 GMT

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