- From: Marcel Ferrante <marcelf@gmail.com>
- Date: Tue, 16 Nov 2010 09:00:06 -0200
- To: public-owl-dev@w3.org
- Message-ID: <AANLkTikHuUr-3uhvJicUwHnnPJQGqpUnJCjxG=+zVNwm@mail.gmail.com>
Hi Aldo and Alex, I understand the modelling issue that "ferrari enzo" could be class or individual. I have no doubt in this relation: (class) Ferrari Enzo (instance of) My Ferrari Enzo The problem is: (class) Car (subclass of) Sport Car ???? Ferrari Enzo What relation has between Sport Car and Ferrari Enzo ? It will be a class or individual in this case? Ive saw many times examples of class/individual like Airplane/Boing 747. Its all wrong ? Thanks Marcel 2010/11/16 Alex Shkotin <alex.shkotin@gmail.com> > 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 > world;-) > We may keep in mind all produced "ferrari enzo" or all existing "ferrari > enzo". > 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. > > Alex > > 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 >> >> >> > -- Marcel Ferrante Silva "All the people in this earth are truly one" <http://www.finaltec.com.br>+55 31 8851-9069 3785-9069 skype: marcelferrante gtalk: marcelf@gmail.com
Received on Tuesday, 16 November 2010 11:00:40 UTC