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Re: [ontolog-forum] Ontology and methodology

To: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "David Decraene" <David@xxxxxxxxxxxxxxx>
Date: Mon, 19 Mar 2007 15:30:54 +0100
Message-id: <28A0FFC7AEF0014AA8C2CE543AE13F5B8B89CF@xxxxxxxxxxxxxxx>
Note that one might also debate on the nature of 'enzyme', is that a protein, 
or a role that can inhere in a protein?    (01)

-----Original Message-----
From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx
[mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx]On Behalf Of David
Decraene
Sent: maandag 19 maart 2007 15:27
To: [ontolog-forum] 
Subject: Re: [ontolog-forum] Ontology and methodology    (02)



>FP> Why should employee be a role while chair is not?    (03)

>For very good reasons:  a chair can be recognized by the
>properties it has in itself without looking at anything else
>(but one can use things that are not chairs *as* a chair).
>But you can't tell whether a person is an employee without
>considering something else.  See the KR book for a discussion
>of Firstness, Secondness, and Thirdness.    (04)

>John    (05)

To add to the discussion:
It might be hard to recognize a transferase (kind of enzyme) by the properties 
it has, but maybe not impossible, so we enter the grey zone there, is it a 
role, or an actual enzyme characterized by the possible role/function it (can) 
bear?
Simply said, identifying whether something is a 'natural kind' or a role might 
be very hard in some cases and completely depends on the level of granularity 
of your ontology or the background of the modeler.    (06)

David    (07)



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