Re: space and time

Dear all,

Thanks for starting up this thread Frans. I don't have a strong opinion 
on this issue, and, like you, I tend to think that space and orthogonal 
dimensions. However, there are a number of use cases where those 
dimensions are tied which trigger the question where we should not have 
a few handy predicates to handle those cases, among others :
   - the temporal validity of the spatial extent of a geographic 
feature: this is indeed a generic use case that can be applied to any 
resource (a solution is for example Memento)
   - the temporal evolution of the spatial extent of a geographic 
feature: the typical case is to represent the evolution of boundaries of 
a administrative unit
   - etc.

I observe that:
   - since 1 month, there is a HUGE thread in the geojson community in 
order to be able to represent time together with space. Concrete 
proposals have been made, see https://github.com/geojson/geojson-ld/issues/
   - OWL Time is a draft, unfinished, and criticized for a number of use 
cases. There has been an attempts 18 months ago from Ivan Herman and 
others to clean it up and publish it as a more stable /ns W3C vocab. But 
nothing really happened, everyone is busy.
   - as Andrea mentioned, this issue was of the key topics discussed at 
LGD'14.
Best regards.

   Raphaël

-- 
Raphaël Troncy
EURECOM, Campus SophiaTech
Multimedia Communications Department
450 route des Chappes, 06410 Biot, France.
e-mail: raphael.troncy@eurecom.fr & raphael.troncy@gmail.com
Tel: +33 (0)4 - 9300 8242
Fax: +33 (0)4 - 9000 8200
Web: http://www.eurecom.fr/~troncy/

Received on Saturday, 24 May 2014 09:38:03 UTC