Re: PROV-ISSUE-206: three proposals to vote on (deadline Jan 15th midnight GMT)

Hi Daniel,

To some extent, the problem already existed since an agent is an entity, 
and therefore
can be used by an activity.

example: luc-in-boston decides to go to Southamtpon

wasGeneratedBy(luc-in-southampton,travel)
used(travel, luc-in-boston)
wasAssociatedWith(travel,luc-in-boston, [role="decision maker"])


It's true however that we don't distinguish well usage from association.
I see usage as the inputs of an activity (like generation is about the 
outputs),
where I see activities as functions consuming inputs and producing outputs.

The relation wasAssociatedWith relates an activity with an entity in a 
capacity other than input.
Hence, they are not subproperties of each other.

Luc

On 01/16/2012 01:44 PM, Daniel Garijo wrote:
> Hi Luc,
> +1 For proposal 1.
> As for proposals 2 and 3, I have a question before voting:
> Now we have weakened wasControlledBy to transform it to wasAssociatedWith,
> but I find that it may be confused with Usage. Usage also involves
> an association between activities and entities. Would it become a 
> subproperty of
> wasAssociatedWith? What would be the difference between a Usage and
> an association which has the same role as in the usage?
>
> Thanks,
> Daniel
>
> 2012/1/16 Luc Moreau <L.Moreau@ecs.soton.ac.uk 
> <mailto:L.Moreau@ecs.soton.ac.uk>>
>
>     Dear all,
>     Kind reminder for these proposals. I was hoping to incorporate changes
>     in the document as soon as possible.
>     Thanks,
>     Luc
>
>
>     On 01/11/2012 01:27 PM, Luc Moreau wrote:
>
>         Dear all,
>
>         The email below was sent just before Xmas. It's now time to
>         try and reach some decisions
>         about it. Can you express your support for the following
>         proposals in the usual way.
>         Deadline: Jan 15, midnight.
>
>         Cheers,
>         Luc
>
>         On 12/21/2011 10:11 PM, Provenance Working Group Issue Tracker
>         wrote:
>
>             PROV-ISSUE-206 (agent-asserted-not-inferred): agents
>             should not be inferred, and wasAssociatedWith should also
>             work with entities [prov-dm]
>
>             http://www.w3.org/2011/prov/track/issues/206
>
>             Raised by: Luc Moreau
>             On product: prov-dm
>
>
>
>             Inference
>             http://dvcs.w3.org/hg/prov/raw-file/default/model/ProvenanceModel.html#association-agent
>
>             originates back from an agreement at F2F1, where we said
>             that agents can be inferred from wasControlledBy.
>
>             The inference was kept, and wasControlledBy replaced by
>             wasAssociatedWith.
>
>             However, I think this has undesirable consequences. For
>             instance, in the example that follows constraint
>             http://dvcs.w3.org/hg/prov/raw-file/default/model/ProvenanceModel.html#wasStartedBy,
>
>             we see that an entity (a request to create an activity) is
>             inferred to become
>             an agent because of the above inferences.
>
>             There are many notions of agents out there, and we should
>             go for minimum semantic commitment in prov-dm to
>             facilitate adoption. Inferring agent is likely to be
>             suspicious in some communities.
>
>             Hence, proposal 1: remove inference association-agent from
>             the document.
>
>             Furthermore, for the example above to type correctly,
>
>             proposal 2: allow wasAssociatedWith to relate an activity
>             and an entity
>
>             proposal 3: allow two forms for wasAssociatedWith:
>                        wasAssociatedWith(activity, agent, plan,
>             attributes)
>                           and
>                        wasAssociatedWith(activity, entity, attributes)
>
>
>             Cheers,
>             Luc
>
>
>
>
>
>
>     -- 
>     Professor Luc Moreau
>     Electronics and Computer Science   tel: +44 23 8059 4487
>     <tel:%2B44%2023%208059%204487>
>     University of Southampton          fax: +44 23 8059 2865
>     <tel:%2B44%2023%208059%202865>
>     Southampton SO17 1BJ               email: l.moreau@ecs.soton.ac.uk
>     <mailto:l.moreau@ecs.soton.ac.uk>
>     United Kingdom http://www.ecs.soton.ac.uk/~lavm
>     <http://www.ecs.soton.ac.uk/%7Elavm>
>
>
>

-- 
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