ISSUE-15 RE: Time Ontology outstanding Issue 4

General relations between Temporal Entities are supported by the relations time:before, time:after, time:hasBeginning, time:hasEnd. 
However, as noted in ISSUE-65 the domain and range of these entails that the subject and object of any instantiation is a time entity, which may be undesirable. 

Furthermore, all possible relative relations between time intervals are supported by the relationships described in 5.3. 
However, use of any of these properties entails that both subject and object is a ProperInterval. 

Simon 

-----Original Message-----
From: Little, Chris [mailto:chris.little@metoffice.gov.uk] 
Sent: Saturday, 17 December, 2016 02:05
To: SDW WG Public List <public-sdw-wg@w3.org>; sdwwg@lists.opengeospatial.org
Subject: Time Ontology outstanding Issue 4

Dear All,
 
Here is an issue in the latest draft of the Time Ontology http://w3c.github.io/sdw/time/ for discussion and resolution.

I propose to delete this issue because if the existing OWL-Time can or cannot support "past, present and future", the revised ontology will be the same. In effect this is looking for evidence of implementation, or none.

I think that the original requirement from the use cases was about being able to reason about relative times. E.g. an event is in the past but was in the future of a previous event at that time. That is, reasoning about several events and their sequence, from the 'viewpoint' of each of them.

If anyone has evidence of such usage by OWL-Time, we can point from the requirement to Ontology, as proposed for several of the Notes.

Chris
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Section 2 Changes from previous versions
Issue 4 https://www.w3.org/2015/spatial/track/issues/15   
Past, present future - this appears to already be supported using capabilities in OWL-Time, but needs to be verified.
----------------
Chris Little
Co-Chair, OGC Meteorology & Oceanography Domain Working Group

IT Fellow - Operational Infrastructures
Met Office  FitzRoy Road  Exeter  Devon  EX1 3PB  United Kingdom
Tel: +44(0)1392 886278  Fax: +44(0)1392 885681  Mobile: +44(0)7753 880514
E-mail: chris.little@metoffice.gov.uk  http://www.metoffice.gov.uk


I am normally at work Tuesday, Wednesday and Thursday each week

Received on Sunday, 18 December 2016 11:45:32 UTC