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RE: Multi-layered Knowledge Representations for Healthcare (was RE: An argument for bridging information models and ontologies at the syntactic level)

From: Kashyap, Vipul <VKASHYAP1@PARTNERS.ORG>
Date: Thu, 24 Jul 2008 07:24:15 -0400
Message-ID: <DBA3C02EAD0DC14BBB667C345EE2D12402E8C826@PHSXMB20.partners.org>
To: <dan.russler@oracle.com>, "Samson Tu" <swt@stanford.edu>
Cc: "Elkin, Peter L., M.D." <Elkin.Peter@mayo.edu>, <public-semweb-lifesci@w3.org>, <public-hcls-coi@w3.org>
 
1) In the reference you site..."A class is the descriptor for a set"...

2) Earlier, you stated that "semantics of a class as denoting a set of
instances."

I believe these two statements represent the "apples" and "oranges" you
referenced:

Statement 1) is the traditional "a class describes the attributes and
associations for a concept that are common to a set of instances." 
Statement 2) is better described by your population example.
 
[VK] I believe these are apples and oranges:
 
(1) describes the "structure, behavior and relationships" of classes and
typically focuses on the structure of the class.
 
(2) describes the "semantics of a class" 
 
I think this is the major cause of confusion. The focus of RIM classes had
primarily been structure and not semantics, at least based on the descriptions
I have read so far.
Also, it is  (1) doesn't necessarily => (2). 
 
One possibility is that we revisit the all the RIM definitions and try to
characterize them from a model or set theoretic perspective?
 
---Vipul
 
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Received on Thursday, 24 July 2008 11:25:00 GMT

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