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RE: OWL-Time extensions for Era

From: Cox, Simon (L&W, Clayton) <Simon.Cox@csiro.au>
Date: Mon, 20 Jul 2020 02:04:27 +0000
To: √Člie Roux <elie.roux@telecom-bretagne.eu>
CC: "public-sdwig@w3.org" <public-sdwig@w3.org>
Message-ID: <ME2PR01MB28821923FB0200C5C81FA7CF887B0@ME2PR01MB2882.ausprd01.prod.outlook.com>
ISO 19108 defines four 'indeterminate values' for temporal position. 
- 'now' - which corresponds with the time it is de-referenced
- 'after T1' - so if T1="now" then it says that we don't know when it is but it is later than now 
- 'before T1' - so if T1="now" then it says that we don't know when it is but it is earlier than now 
- 'unknown' - we don't know what the relationship between it and any other instant is

Perhaps we should add these to OWL-Time to support your use-cases. 

Simon 


> -----Original Message-----
> From: √Člie Roux <elie.roux@telecom-bretagne.eu>
> Sent: Sunday, 19 July, 2020 18:55
> To: Cox, Simon (L&W, Clayton) <Simon.Cox@csiro.au>
> Cc: public-sdwig@w3.org
> Subject: Re: OWL-Time extensions for Era
> 
> Dear Simon and all,
> 
> I've checked the thors and gts ontologies, excellent work, thanks!
> 
> As pointed out by Chris, some eras of my proposal don't have a concept of
> end, their use just goes in and out of style. This is the case for the Common
> Era, but also the Buddhist Era, the Tibetan Royal Years, etc. So I don't think
> my proposal of time:Era can be interpreted as a time:TemporalEntity, and
> thus not as a thors:Era...
> 
> So I wouldn't change anything to my proposal. Unless perhaps you think it
> would be useful if my proposal also included concepts such as
> time:LeftBoundedInterval, time:RightBoundedInterval,
> time:UnboundedInterval and time:GeneralInterval? I'm definitely not the
> most qualified person on this list to make such a proposal as I don't know
> much about Allen temporal algebra... but I can give it a shot if it helps.
> 
> What do you all think?
> 
> Best,
> --
> Elie
Received on Monday, 20 July 2020 02:05:18 UTC

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