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Re: PROV-ISSUE-239 (TLebo): is wasGeneratedBy(e) meaningful? [prov-dm]

From: Timothy Lebo <lebot@rpi.edu>
Date: Mon, 6 Feb 2012 20:26:30 -0500
Cc: Daniel Garijo <dgarijo@delicias.dia.fi.upm.es>, Provenance Working Group <public-prov-wg@w3.org>
Message-Id: <C3579694-3D17-4527-9B73-0B820C0D24C3@rpi.edu>
To: Stian Soiland-Reyes <soiland-reyes@cs.manchester.ac.uk>

On Feb 6, 2012, at 7:56 PM, Stian Soiland-Reyes wrote:

> On Mon, Feb 6, 2012 at 21:43, Daniel Garijo
> <dgarijo@delicias.dia.fi.upm.es> wrote:
> 
>> you may want to say that an entity has been created and assert some metadata
>> about the creation (hour,
>> location, etc.), but not want/know which activity produced it. That is why
>> everything can optional but the entity.
> 
> This is a valid explanation, however then you have still included the
> time or the attributes, and not covering Tim's question.
> 
> 
> However, I don't see any reason why we need to spend effort making
> wasGeneratedBy(e) 'forbidden' -

+1, but perhaps we make a note of it in the definition, "wasGeneratedBy([],e) is not a meaningful assertion"

> it could still be used with a note if
> someone wants to give metadata about the generation (say why the
> activity and time could not be recorded!)

But you'd need to name the Generation, so you'd be at wasGeneratedBy(gen, e) and no longer in the case  wasGeneratedBy([], e)

-Tim


> 
> 
> -- 
> Stian Soiland-Reyes, myGrid team
> School of Computer Science
> The University of Manchester
> 
Received on Tuesday, 7 February 2012 01:39:40 GMT

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