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RE: OWL-Time extensions for Era

From: Little, Chris <chris.little@metoffice.gov.uk>
Date: Wed, 15 Jul 2020 11:54:04 +0000
To: Élie Roux <elie.roux@telecom-bretagne.eu>, "public-sdwig@w3.org" <public-sdwig@w3.org>, "Simon Cox (simon.cox@csiro.au)" <simon.cox@csiro.au>, Ted Guild <ted@w3.org>
Message-ID: <CWXP265MB005343B7F38F565BD030F52BA77E0@CWXP265MB0053.GBRP265.PROD.OUTLOOK.COM>
Dear Élie,

I was slightly worried by the definition of Common Era as an unbound  interval. The original Allen Algebra of temporal intervals was only for finite intervals, but I think there has been substantial mathematical work to show that, generally, extension to allow left half-infinite, right half-infinite and fully infinite intervals would not cause any problems in practice.

Ted Guild could advise, but I think that the proposal is currently on your GitHub. Perhaps it should be in the W3C GitHub so that issues can be raised, discussed and resolved?

Simon Cox and his co-authors may want to comment on whether your Eras be, or would be better, built upon the Temporal Aggregates extension https://www.w3.org/TR/2020/NOTE-vocab-owl-time-agg-20200707/ 

Best wishes, Chris
-----Original Message-----
From: Élie Roux <elie.roux@telecom-bretagne.eu> 
Sent: 11 July 2020 20:20
To: public-sdwig@w3.org
Subject: OWL-Time extensions for Era

Dear all,

After our last email exchange I started to work on some extensions to the OWL-Time ontology to encode features of non-Gregorian calendars. I will send proposals for two different aspects separately, this first one is about eras:



It's the first time I'm doing this kind of exercise so I'm not sure what the next steps are; but I'm happy to review the proposal and answer questions, either by email or during a meeting if it's relevant.

Thanks in advance,

Received on Wednesday, 15 July 2020 11:54:21 UTC

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