On May 14, 2009, at 4:31 AM, David Leal wrote: (01)
> Dear All,
>
> There are several different areas related to units, which include:
>
> 0) A framework ontology covering:
> - generic concepts such as: quantity, "quantities of the same kind",
> unit,
> scale;
> - basic scientific quantities, such as mass, length, time-duration,
> energy;
> - SI units for the basic scientific quantities.
> (02)
> 1) The many thousands of different units for basic scientific
> quantities
> which are used in different parts of engineering and business, such as
> furlong, hectare, BTU, US survey foot. There are also measures for
> "amount
> of stuff", such as bolt of cloth, which are specific to particular
> industries.
>
> 2) "Difficult quantities/properties" such as those in materials
> science -
> tensile strengths, hardnesses, etc. The result of a high precision
> temperature measurement is also a "difficult quantity/property",
> because it
> is measured according to ITS90.
>
> 3) Properties at a particular state, such as "dynamic viscosity at 20
> degrees C". Here the quantity is simple, but the value is for a
> state which
> the fluid is not necessarily in.
>
> There is a pressing need to solve business requirements in area (1)
> now!
> Fortunately this area is straightforward, and does not rely
> crucially on
> area (0) which is difficult. (03)
Hmm. Maybe Im being naive here, but I don't see why area 0 should be
all that difficult to ontologize. In fact, it seems pretty
straightforward. Getting wide agreement on a single such ontology
might be hard going on impossible, but actually creating a reasonably
complete ontology seems manageable. (04)
Pat Hayes (05)
_________________________________________________________________
Msg Archives: http://ontolog.cim3.net/forum/ontology-summit/
Subscribe/Config: http://ontolog.cim3.net/mailman/listinfo/ontology-summit/
Unsubscribe: mailto:ontology-summit-leave@xxxxxxxxxxxxxxxx
Community Files: http://ontolog.cim3.net/file/work/OntologySummit2009/
Community Wiki: http://ontolog.cim3.net/cgi-bin/wiki.pl?OntologySummit2009
Community Portal: http://ontolog.cim3.net/ (06)
|