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Re: [ontolog-forum] CL, CG, IKL and the relationship between symbols in

To: "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "John F. Sowa" <sowa@xxxxxxxxxxx>
Date: Wed, 02 Jan 2008 12:46:13 -0500
Message-id: <477BCDE5.300@xxxxxxxxxxx>
Pat and Duane,    (01)

Classifications are not site dependent, but task dependent.    (02)

PH>> Hmm. But how can one and the same site have many
 >> different ontological classifications?    (03)

DN> Sometimes it can have multiple representation terms
 > (*aka ISO 11179 - 3)    (04)

DN> You may wish to read the OASIS Reference Model for Service
 > Oriented Architecture.  Within the reference model is an
 > important aspect called "execution Context".    (05)

That's a good example, but the variety of task-oriented
differences in classification is all pervasive in every aspect
of technology and everyday life.    (06)

Something as simple as water, for example, can be classified in
an enormous number of ways.  Just consider its use for drinking,
washing, cooking, cooling, flushing the toilet, watering the lawn, 
filling the swimming pool, serving as a chemical reagent (with
what level of purity?), etc.  And then consider ways of classifying
it according to source and packaging: tap water, rain water, waste
water, flowing water, stagnant water, distilled water, bottled water
(from what source, what purity, what purpose?), etc.    (07)

DN> however the concepts should be singular, no?    (08)

What is your criterion of singularity?  See the above examples
of 'water'.  Or take any word that seems to be univocal, such
as 'automobile', and consider how its "meaning" has changed
over the past 100 years.  In 1908, 'automobile' was a synonym
for 'horseless carriage', but today it refers to things whose
inner workings a professional auto mechanic from 30 years ago
would be at a loss in trying to repair.  (Now, they don't even
try to repair those things, and the "field replaceable units"
keep getting bigger and bigger.)    (09)

John Sowa    (010)

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