David Leal wrote:
> Dear Mike,
>
> I do not think that euro, dollar, yen, etc. should be within scope, any more
> than "6 inch wire nail", "10 X 150 galvanised coach bolt", etc..
>
For the record, I agree with David that Currency is out of scope for a
UoM ontology. I leave 'currency ontology' to the ISO TC68 folk, because
the meaning of currency units and the mechanisms of definition involve
concepts and disciplines entirely unrelated to UoM. (01)
Of course, for the 'universal upper ontology' folk, I am sure there are
common supertypes and patterns. I believe that Currency could derive
from a common 'quantities' model at some level, but not from a
system-of-units model. That is, a currency unit might well be a
'reference quantity', but it is not a requirement that it satisfy
whatever axioms we assign to 'measurement unit'. (02)
-Ed (03)
--
Edward J. Barkmeyer Email: edbark@xxxxxxxx
National Institute of Standards & Technology
Manufacturing Systems Integration Division
100 Bureau Drive, Stop 8263 Tel: +1 301-975-3528
Gaithersburg, MD 20899-8263 FAX: +1 301-975-4694 (04)
"The opinions expressed above do not reflect consensus of NIST,
and have not been reviewed by any Government authority." (05)
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