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Re: [ontology-summit] dimensions/aspects of ontology types?

To: Ontology Summit 2007 Forum <ontology-summit@xxxxxxxxxxxxxxxx>
From: Bill Andersen <andersen@xxxxxxxxxxxxxxxxx>
Date: Sun, 28 Jan 2007 17:44:48 -0500
Message-id: <809182BC-D1F9-4041-97F6-8C681AEDFEB0@xxxxxxxxxxxxxxxxx>
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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