Ed, (01)
> We have made some effort at ontologies in this area, based in part on
> the International Vocabulary for Measurement, a publication of the
> Bureau Internationale des Poids et Mesures (BIPM):
> http://www.bipm.org/en/publications/guides/vim.html (02)
Thank you for the link. I understand more about "dimensional exponents"
(page 6). That will be an important component of a tools that deal with
this topic, but I don't think that should be exposed to a normal human :-). (03)
> We had this same problem with SI quantity(type) "time". Technically,
> these terms should have URIs beginning with urn:iso:std:... that are
> identifiers for terms defined in ISO 31 and ISO 1000. But between the
> W3C insistence on using http: to begin URIs and the ITU-T insistence on
> using urn:oid:<magic numbers>, I don't know what became of the iso
> prefix (I never saw the registration of the ISO URN on the IANA or IETF
> site). (04)
If they consider the concept of a metre to be the intellectual property
of the ITU-T and they are using "urn:" URIs because they *don't* want a
web accessible, unencumbered definition, then I would warn them that
where there is a need, somebody will fill it, and they will have simply
cut themselves out of the semantic web. (05)
I would be just as happy with a "http://unitsml.nist.gov/"; prefix, or a
"http://www.bipm.org/vim/"; one. (06)
Joel (07)
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