Hi Leo... (01)
I have some comments about some of these proposed dimensions.. (02)
On Jan 28, 2007, at 14:40 , Obrst, Leo J. wrote: (03)
> Dimensions of Ontology Types:
>
> 1) Formality: Informal (Formality = 0) vs. Formal (Formality = 1) (04)
I don't quite get what this means. If we're not talking about
artifacts that are somehow used to influence software to do things we
want, I don't see the point. So, for some thing O, if Formal(O)
means that O is a logical theory, then, following ChrisM, I don't see
what anything not formal should even be considered, since otherwise,
it would be pretty close to impossible to say how it could be used
for some computational end. (05)
> 2) Expressivity: Expressivity of the semantic model (i.e., underlying
> knowledge
> representation language or logic) [No scale determined yet] (06)
This is a property of a logical system, independent of the instances
of which we wish to regard as "ontology", so I'd exclude this dimension. (07)
> 3) Concept-based: Term (Concept-based = 0) vs. concept (real world
> referent)(Concept-based = 1) (08)
Barry touched on this. I really do not understand what "concept-
based" means. If you have an ontology and want to go so far as to
include concepts in its scope, then good. Else, it seems a wiggle
word, left to whatever extra-logical powers one would like to ascribe
to "concepts" (09)
> 5) Application focus/use cases, etc. (part of this is precision of the
> service needed, e.g., metadata/topic terms for a document to aid in
> broad doc topic retrieval vs. a semantic service query, specfication,
> or composition): [No scale determined yet] (010)
This depends on a clear exposition of the intended functions of
ontologies. (011)
The rest seem to be "software-engineering" type properties
(necessarily meta-logical) of the kind I talked about in my note. (012)
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