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RE: ISSUE-144 - OWL-Time - missing interval relations

From: Little, Chris <chris.little@metoffice.gov.uk>
Date: Wed, 8 Mar 2017 17:32:35 +0000
To: "Simon.Cox@csiro.au" <Simon.Cox@csiro.au>, "public-sdw-wg@w3.org" <public-sdw-wg@w3.org>
Message-ID: <3DAD8A5A545D7644A066C4F2E82072883E2AFB12@EXXCMPD1DAG4.cmpd1.metoffice.gov.uk>

I understand the reasons and support this closing of logical loopholes.


(Mathematical in- jokes about Lebesgues Integration suppressed)

From: Simon.Cox@csiro.au [mailto:Simon.Cox@csiro.au]
Sent: Wednesday, March 08, 2017 6:13 AM
To: Simon.Cox@csiro.au; public-sdw-wg@w3.org
Subject: RE: ISSUE-144 - OWL-Time - missing interval relations

I’ve received no comments on this proposed enhancement.
If no objections, I will merge tomorrow.

From: Simon.Cox@csiro.au<mailto:Simon.Cox@csiro.au> [mailto:Simon.Cox@csiro.au]
Sent: Monday, 27 February, 2017 09:08
To: public-sdw-wg@w3.org<mailto:public-sdw-wg@w3.org>
Subject: [ExternalEmail] ISSUE-144 - OWL-Time - missing interval relations

I implemented
:intervalDisjoint (Allen & Ferguson 1997)
:intervalIn (Allen 1984)
Given OWL2 lack of expressiveness around union-of-properties, I did it by making

            :intervalAfter, :intervalBefore each sub-properties of :intervalDisjoint
            :intervalStarts, :intervalFinishes, :intervalDuring each sub-properties of :intervalIn

And added documentation to the text to match.

While I was at it I made reverse inverseOf relations and domain and range of all :interval* properties explicit, so we are not relying solely on OWL entailments.

Implemented in the branch https://github.com/w3c/sdw/tree/simon-time-interval-relations

Pull request https://github.com/w3c/sdw/pull/580

Please review.

Simon J D Cox
Research Scientist
Environmental Informatics
CSIRO Land and Water<http://www.csiro.au/Research/LWF>

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Received on Wednesday, 8 March 2017 17:33:11 UTC

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