Re: [ontology-summit] 回复： Progressing a Units Ontology - virtual sessio

[Duane Nickull <dnickull@xxxxxxxxx>]

I would concur – I have not reviewed this work but it is on my list and sound like a good candidate to read on the airplane this weekend.  There is so much work in this area that is overwhelms me.

Can you suggest a few links to get me started?

Duane


On 5/29/09 9:58 AM, "Ed Barkmeyer" <edbark@xxxxxxxx> wrote:

> Duane Nickull wrote:
>
> > This all lead me back to the initial perceived problem – a lack of alignment at a higher level for all taxonomies or weights and measures including notes where existing dimensions to the semantics of units were not considering the full spectrum of the laws of physics (ignoring quantum mechanics for now).
>
> I respectfully suggest that Duane's problem is lack of examination of
> the literature.  The issue of "alignment of taxonomies for weights and
> measures" has been thoroughly researched and carefully addressed in ISO
> 1000 and in ISO Guide 99 (the VIM) and other BIPM publications.  The
> scientific basis for the SI system of units was established in 1875 and
> has been continuously improved as measurement science has advanced. And,
> over time, the relationships of other 'customary' systems of measurement
> to the SI system have become well-defined.  Historically the problem has
> been in getting careful definitions of "customary" measurement units,
> and in understanding the legal and commercial requirements with respect
> to accuracy/uncertainty in measures.  Not all of those problems have
> been solved formally, and commercial practice is careful only to the
> extent required for the purpose at hand (which gives rise to a lot of
> ill-informed practitioners).  But for the ontology, we have well
> documented scientific and trade sources, and we need to select from them
> the knowledge we intend to engineer (and stop there).
>
> [What else would you expect from a NIST person? ;-)]
>
> -Ed
>
> --
> 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
>
> "The opinions expressed above do not reflect consensus of NIST,
>  and have not been reviewed by any Government authority."

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