RE: ISSUE-26 RE: Time Ontology outstanding Issue 3

Simon

Agreed

Chris

-----Original Message-----
From: Simon.Cox@csiro.au [mailto:Simon.Cox@csiro.au] 
Sent: Sunday, December 18, 2016 11:45 AM
To: Little, Chris; public-sdw-wg@w3.org; sdwwg@lists.opengeospatial.org
Subject: ISSUE-26 RE: Time Ontology outstanding Issue 3

I propose we close ISSUE-26, but add a note that 

"Considerations relating to accuracy, uncertainty and temporal vagueness are out of scope for OWL-Time. " 

And also near to the definition of time:unitType, note that  - 

"The property time:unitType indicates the precision of a time position, when that is expressed using GeneralDateTimeDescription or DateTimeDescription. Seven individual unitTypes are provided, corresponding to the conventional clock-calendar units." 



-----Original Message-----
From: Little, Chris [mailto:chris.little@metoffice.gov.uk] 
Sent: Saturday, 17 December, 2016 01:43
To: SDW WG Public List <public-sdw-wg@w3.org>; sdwwg@lists.opengeospatial.org
Subject: Time Ontology outstanding Issue 3

Dear All,
 
Here is the summary of the marked issues in the latest draft of the Time Ontology http://w3c.github.io/sdw/time/ .

My proposal is that the issue is valid, but the work is out of scope of the revised Time ontology, and we can delete it from the document.

Because I also have concerns about the detailed syntax orientated aspects of the EDTF proposal, I propose that we do not make any informative mention on the proposal.
 
Chris
----------------
Section 2 Changes from previous versions
Issue 3 https://www.w3.org/2015/spatial/track/issues/26   
Temporal vagueness requirement. Extended Data/Time Format (EDTF) is a detailed proposal for how to encode temporal vagueness, and some other concerns, by extending the xsd:dateTime syntax. The editors consider that would be the wrong direction since it would make the encoding inconsistent with all XSD-based processors. On the other hand, specific RDF properties matching the ones proposed in EDTF could be used to make it amenable to RDF reasoning. However, we should consider doing this in a separate namespace. Note that some of the concerns in EDTF are already accommodated in OWL-Time (e.g. 'unspecified' appears to only require the timeUnit to be chosen appropriately). 
----------------

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 Tuesday, 20 December 2016 19:14:56 UTC