Re: concept illustrations for the data journalism example

Hi,

For what's worth, OPMV (http://purl.org/net/opmv/ns#) represents time 
information using concepts from the W3C Time ontology.

The range of opmv:wasPerformedAt is a time:TemporalEntity, which can be 
either a time:Instant or time:Interval. The model decision is based on 
requirements from users. And properties opmv:wasStartedAt and 
opmv:wasEndedAt can be used to point to a time instant.

The vocabulary also has terms to describe when an artifact was used or 
generated at a specific time instant.

This is just to add another aspect of modeling opinion:)

For those heard of OPMV for the first time, OPMV is an OWL-DL ontology 
based on OPM, but it is trying to be as lightweight as possible.

cheers,

Jun

On 12/05/2011 13:05, Olaf Hartig wrote:
> Hey
>
> (sorry, I messed something up with the email addresses - I sent some mails to
> the old XG list - it should be fixed now)
>
> On Thursday 12 May 2011 13:42:30 Luc Moreau wrote:
>> Olaf and Paul,
>> [...]
>> Time is important no doubt, and not made explicit in the scenario.
>> What does it mean to be performedAt? Time at which process execution
>> took place?
>
> In the Provenance Vocabulary prv:performedAt is a possible property of a
> prv:Execution (representing the completed execution of a process). Thus,
> yes, prv:performedAt refers to the time at which the execution took place.
>
>> Is it instaneous?
>
> The rdfs:range of prv:performedAt is xsd:dateTime. Hence, it is instaneous.
> And (before you ask ;)  we always understood this instant to refer to the
> point in time when the execution completed - we should make that more
> explicit in the documentation.
>
>> has it a duration?
>
> The Provenance Vocabulary has nothing for durations.
>
>> Is it the time at which
>> the DataItem
>> is produced?
>
> If the prv:Execution is a prv:DataCreation and the prv:DataItem has been
> prv:createdBy that, then yes.
>
> Olaf
>
>
>> Can we express these questions and answer them independently of a
>> terminology?
>>
>> Luc
>

Received on Thursday, 12 May 2011 14:10:48 UTC