FW: [legalruleml] Time Instants or Time Points

See attached documents and message from the LegalML group. Lets talk about this at tomorrow’s meeting.

 

tc

 

"If something is not worth doing, it`s not worth doing well "    -- Peter Drucker

Toby Considine
TC9, Inc

OASIS TC Chair: oBIX & WS-Calendar

OASIS TC Editor: EMIX, Energy Interoperation

SGIP Smart Grid Architecture Committee

  

Email: 
Phone: (919)619-2104

http://www.tcnine.com
blog: http://www.NewDaedalus.com 

 

From: Robin Cover [mailto:] 
Sent: Wednesday, October 17, 2012 7:19 PM
To: Toby Considine
Cc: Robin Cover
Subject: Fwd: [legalruleml] Time Instants or Time Points

 

Toby, the note below made me think of WS-Calendar, EMIX... and

your work on time intervals.

 

Two documents attached are about the OMG's work

on Date-Time Vocabulary

 

Best,

 

- Robin

---------- Forwarded message ----------
From: Tara Athan <>
Date: Wed, Oct 17, 2012 at 6:01 PM
Subject: [legalruleml] Time Instants or Time Points
To: "" <>

There is a relatively recent date-time ontology published by OMG (http://www.nist.gov/customcf/get_pdf.cfm?pub_id=911074) that addresses time scale granularity and also solves the problem of duration (is 1 month greater, equal or less than 30 days?)

While LegalRuleML is not supposed to be dependent on any particular ontology, this work does provide a useful conceptualization that allows certain intervals of time to be specified with a single datum. For example the date 2012-10-12 corresponds to a particular interval of time which can be specialized to a particular 24 hr interval when a timezone is added. This general concept of a point on a time scale with a particular granularity is called "time point". It is more general than a "point in time" or "time instant", but could include that concept if the time scale is continuous.

I proposed that we adopt this terminology, (but not the ontology) by referring to a collection of <ruleml:Time> elements as <lrml:TimePoints>

This also avoids the unfortunate plural "Times", which could be confused with multiplication or repitition, while retaining generality regarding the granularity, if any, of the time scale.

Example

<lrml:TimePoints>
  <ruleml:Time key="t1"> <ruleml:Data xsi:type="xs:dateTime">2012-07-21T00:00:00Z</ruleml:Data> </ruleml:Time>
  <ruleml:Time key="t2"> <ruleml:Data xsi:type="xs:date">2012-07-21</ruleml:Data> </ruleml:Time>
</lrml:TimePoints>

Tara

 

-- 
Robin Cover
OASIS, Director of Information Services
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Attachment:
NIST-Date-Time-Vocab-911074.pdf

Description: Adobe PDF document

Attachment:
OMG-Date-Time-Vocab-12-01-02.pdf

Description: Adobe PDF document