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RE: Time ontology extension for non-Gregorian calendars

From: Cox, Simon (L&W, Clayton) <Simon.Cox@csiro.au>
Date: Fri, 22 May 2020 08:05:44 +0000
To: "Cox, Simon (L&W, Clayton)" <Simon.Cox@csiro.au>, Élie Roux <elie.roux@telecom-bretagne.eu>, "public-sdwig@w3.org" <public-sdwig@w3.org>
Message-ID: <ME2PR01MB2882F70416787CD82006654B88B40@ME2PR01MB2882.ausprd01.prod.outlook.com>
Also note that ISO 19111:2019 addresses aspects of TRS. 
It is available for free as 'Topic 2' of OGC's Abstract Spec - see https://docs.opengeospatial.org/as/18-005r4/18-005r4.html 
Look in Annex D. 

Simon Cox 

-----Original Message-----
From: Cox, Simon (L&W, Clayton) <Simon.Cox@csiro.au> 
Sent: Friday, 22 May, 2020 11:42
To: Élie Roux <elie.roux@telecom-bretagne.eu>; public-sdwig@w3.org
Subject: [ExternalEmail] RE: Time ontology extension for non-Gregorian calendars

Hi Elie - 

There is a stub class in OWL-Time https://www.w3.org/TR/owl-time/#time:TRS 
Specific kinds of Temporal Reference system should be implemented as sub-classes, and each specific temporal reference system as an individual member of this class or one of its sub-classes.
As mentioned in the OWL-Time rec these details were not in scope for OWL-Time, which primarily focusses on temporal relationships. 
The 2017 revision did add structures to overcome the assumption that the Gregorian Calendar was the only one, but we didn't implement any actual systems. 

Simon Cox

-----Original Message-----
From: Élie Roux <elie.roux@telecom-bretagne.eu> 
Sent: Thursday, 21 May, 2020 23:06
To: public-sdwig@w3.org
Subject: Re: Time ontology extension for non-Gregorian calendars

Dear Peter,

Thanks a lot for your answer!

> There is an attempt at expressing it as an ontology (in RDF/OWL) at https://def.isotc211.org/ontologies/iso19108/. The project that is part of has been criticised; as the RDF/OWL is generated automatically from UML models, it isn't ideal. But it should give you an idea of whether the concepts defined there are useful to you.

Thanks, I'll take a closer look. I take there's no intent to port these concepts in OWL-Time?

> The UML is available at http://iso.sparxcloud.com/index.php; the document is sold by ISO and (in France) AFNOR; it may be available through your organisation or public library.

Unfortunately I can't access ISO files nor does any of my colleagues in Academia or my public library; and I don't have a budget for it.
Sending the PDF off-list would result in a lot of gratitude of course!


Received on Friday, 22 May 2020 08:06:12 UTC

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