Re: New PROV Errata entry

Hi Luc,
I am sorry, but I must be missing something here.
generatedAt time (Entity->dateTime) is an attribute of Entity.
atTime (InstantaneousEvent ->dateTime) is an attirbute of Generation, among
others like End or Start.

Example 20 in Prov-DM (
http://www.w3.org/TR/2013/REC-prov-dm-20130430/Overview.html#anexample-generation2)
states that "wasGeneratedBy(e, -, 2001-10-26T21:32:52)" is valid. And that
is equivalent to "e prov:generatedAtTime 2001-10-26T21:32:52", right?

I still fail to see where the issue is :(
Daniel

2015-07-01 16:10 GMT+02:00 Luc Moreau <l.moreau@ecs.soton.ac.uk>:

>  Hi Daniel,
>
> Time is an attribute of generation, not of entity, as it currently stands.
>
> Luc
>
>
> On 01/07/2015 15:04, Daniel Garijo wrote:
>
>   Hi Tim,
>  are you suggesting to delete prov:generatedAtTime??
>  Example 20 in PROV-DM shows how to do the equivalent thing with  DM:
>
> http://www.w3.org/TR/2013/REC-prov-dm-20130430/Overview.html#anexample-generation2
>
>  I think this was a very useful property for stating the creation time of
> an entity without having to qualify the generation term.
>  It is also used in the prov-dc mapping. I don't understand why this is an
> issue.
>  Best,
>  Daniel
>
> 2015-07-01 15:37 GMT+02:00 Timothy Lebo <lebot@rpi.edu>:
>
>>  Please note a recent addition to the PROV Errata [1] regarding PROV-O’s
>> generation and invalidation time properties, copied below.
>> The entry resolves issue [2].
>>
>>  Thanks to Luc and his team for pointing out the disparity.
>> Thanks to Ivan for publishing the revised Errata document.
>>
>>  Regards,
>> Tim
>>
>>  Error o-5 <http://www.w3.org/2011/prov/errata.html#o-5>, generation and
>> invalidation time properties have no equivalent in prov-dm
>>
>> in (22) Property: prov:generatedAtTime
>> <http://www.w3.org/TR/prov-o/#generatedAtTime> and in (27) Property:
>> prov:invalidatedAtTime <http://www.w3.org/TR/prov-o/#invalidatedAtTime>,
>> prov:generatedAtTime and prov:invalidatedAtTime properties should not be
>> defined because they have no equivalent in prov-dm and thus no equivalent
>> in other PROV serializations.
>>
>> (22) Property: prov:generatedAtTime
>>
>> IRI:http://www.w3.org/ns/prov#generatedAtTime
>>
>> (27) Property: prov:invalidatedAtTime
>>
>> IRI:http://www.w3.org/ns/prov#invalidatedAtTime
>>
>>  [1] http://www.w3.org/2011/prov/errata.html#o-5
>> [2] https://github.com/timrdf/prov-wg/issues/4
>>
>>  Timothy Lebo
>> lebot@rpi.edu
>> https://impactstory.org/TimothyLebo
>>
>>
>
> --
> Professor Luc Moreau
> Head of the Web and Internet Science Group
> Electronics and Computer Science   tel:   +44 23 8059 4487
> University of Southampton          twitter: @lucmoreau
> Southampton SO17 1BJ, UK           http://www.ecs.soton.ac.uk/~lavm
>
>