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Re: class and inviduals

From: Alex Shkotin <alex.shkotin@gmail.com>
Date: Tue, 16 Nov 2010 06:20:50 +0300
Message-ID: <AANLkTikF--dcF5fSWDDnK2GBEiTyjmfcsBj65T5TNU4r@mail.gmail.com>
To: Marcel Ferrante <marcelf@gmail.com>
Cc: public-owl-dev@w3.org
Hi Marcel,

if you keep in mind particular material thing then use individual.
But you need something like factory serial number to identify it properly.
Well, or any other attributes to refer exactly to this thing in a real
We may keep in mind all produced "ferrari enzo" or all existing "ferrari
These should be individuals too.
If you think about 'what does it mean to be "ferrari enzo"?', and would like
to give definition,
then use class.


2010/11/16 Marcel Ferrante <marcelf@gmail.com>

> Hi,
> Sometimes, when we define class and individual to students, appears some
> doubts.
> For example:
> In the owl reference (http://www.w3.org/TR/owl-ref/) class is defined as
> "abstraction mechanism for grouping resources with similar characteristics"
> or class define a set of individuals with same characteristics in common.
> A good exemple is car (class) and ferrari enzo (individual).
> But there is many cars that are ferrari enzo, so ferrari enzo could be a
> class and Jonh's ferrari enzo an individual.
> So ferrari enzo could be a class and an invidividual in the same ontology ?
> Or ferrari enzo could be a subclass of car,
> but its diferent than a tradiconal subclass like sport car.
> Is there a more clear definition of class and individual ?
> Thanks in advance,
> Marcel
> --
> Marcel Ferrante Silva
> <http://www.finaltec.com.br>+55 31 8851-9069 3785-9069
> skype: marcelferrante
> gtalk: marcelf@gmail.com
Received on Tuesday, 16 November 2010 09:10:48 UTC

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