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Re: PROV-ISSUE-104 (time-class): How to relate start/end time to PE, use, generation, etc [Formal Model]

From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
Date: Thu, 08 Mar 2012 21:23:11 +0000
Message-ID: <EMEW3|bcdd0e058c3b122f4b8cf7684eed6252o27LNG08L.Moreau|ecs.soton.ac.uk|4F59233F.8010208@ecs.soton.ac.uk>
To: public-prov-wg@w3.org
Hi Stephan,

This is not part of prov-dm.

While part II of prov-dm introduces the relation follows/precedes 
between events,
they are defined to give an interpretation to the data model, and they 
are not a construct
of the data model.

Luc

On 08/03/12 16:48, Stephan Zednik wrote:
> On Mar 8, 2012, at 4:02 AM, Stian Soiland-Reyes wrote:
>
>    
>> On Mon, Mar 5, 2012 at 16:24, Daniel Garijo
>> <dgarijo@delicias.dia.fi.upm.es>  wrote:
>>      
>>> Are you happy with the current modelling? Can we close this issue.
>>>        
>> I'm  not happy with the current modelling, as I feel we should also
>> have some simple time-relation properties, so that asserters can say
>> when they know that e2 is after e1 - even if they don't know when
>> either of them was.
>>      
> We could follow the paradigm already established in owl time and have the simple properties
>
> prov:before
> prov:after
>
> The domain and range could be InstantaneousEvent, but that limits us to saying if something is before something else, both things must be instantaneous.  That is a restriction I do not particularly like.
>
> How about Event as a superclass of InstantaneousEvent, and we try again to have an Event that is explicitly non-instantaneous (DurationalEvent?) which a subclass of Event and disjoint from Instantaneous Event.  The domain and range of prov:before and prov:after would then be prov:Event.
>
> --Stephan
>
>    
>> However you can close this issue, as we now use time:Instant objects
>> in the ontology, which can be customized.
>>
>>
>> -- 
>> Stian Soiland-Reyes, myGrid team
>> School of Computer Science
>> The University of Manchester
>>
>>
>>      
>
>    
Received on Thursday, 8 March 2012 21:23:41 GMT

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