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Re: [ontology-summit] URIs for quantities, units and scales

To: <steve@xxxxxxxxxxx>, <ontology-summit@xxxxxxxxxxxxxxxx>, "David Leal" <david.leal@xxxxxxxxxxxxxxxxxxx>
Cc: Howard.Mason@xxxxxxxxxxxxxx, jjb5@xxxxxxxxxxx
From: "Olken, Frank" <folken@xxxxxxx>
Date: Fri, 20 Mar 2009 12:27:32 -0400
Message-id: <FC8D4B532E74304C8B2389567F490D6123D613@xxxxxxxxxxxxxxxxxxxx>
David, Steve,    (01)

I am VERY INTERESTED in measurement units and dimensionality ontologies
and have been for some time.  Dimensionalities form a very interesting
type system with an algebra (multiply/divide  quantities and you can
infer
the dimensionality / units of the result).    (02)

         Frank Olken    (03)

National Science Foundation
Computer and Information Science and Engineering Directorate
Intelligent Information Systems Division
Information Integration and Informatics Program 
Suite 1125
4201 Wilson Blvd.
Arlington, VA 22230    (04)

Tel:      703-292-8930 (main)
Tel:      703-292-7350 (direct)
Email:    folken@xxxxxxx
Twitter:  http://twitter.com/frankolken    (05)

-----Original Message-----
From: ontology-summit-bounces@xxxxxxxxxxxxxxxx
[mailto:ontology-summit-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Steve Ray
Sent: Friday, March 20, 2009 10:28 AM
To: 'David Leal'
Cc: Howard.Mason@xxxxxxxxxxxxxx; ontology-summit@xxxxxxxxxxxxxxxx;
jjb5@xxxxxxxxxxx
Subject: Re: [ontology-summit] URIs for quantities, units and scales    (06)

David,
Very interesting document. I have a question. Shouldn't a
self-consistent
ontology be created for units and quantities before the URIs are
created?
And would the creation of such an ontology be a good target for this
community (arm in arm with TC12 and others)?    (07)

- Steve    (08)

-----Original Message-----
From: David Leal [mailto:david.leal@xxxxxxxxxxxxxxxxxxx] 
Sent: Friday, March 20, 2009 2:33 AM
To: steve@xxxxxxxxxxx
Cc: jjb5@xxxxxxxxxxx; Howard.Mason@xxxxxxxxxxxxxx; Radack@xxxxxxx;
dr.matthew.west@xxxxxxxxx; nicolas.figay@xxxxxxxx;
david.price@xxxxxxxxxxxx;
michel.bohms@xxxxxx
Subject: URIs for quantities, units and scales    (09)

Dear Steve,    (010)

The attached document attempts to explain the need for URIs for
quantities
units and scales to the standardisation community. The document results
from
work within ISO TC184/SC4 and within the W3C Product Modelling XG, which
identified the handling of units of measure on the Web as a key
priority.    (011)

There has been initial contact with Anders Thor the chair of ISO TC12,
and
with ISO CS, but it is difficult to make further progress because it
impinges upon so many aspects of standardisation.    (012)

The document has consensus as a summary, but David Price points out that
dereferencing URIs for quantities, units and scales is a secondary
issue,
and that mentioning it may "frighten the horses".    (013)

Best regards,
David    (014)




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