About Protégé

(1st-April-2021)

• Protégé tool provides an easy to use interface for creating OWL ontologies

• In this presentation we will create an ontology for Pizza

• The Pizza Ontology described is a very simple one that is for learning purposes

• In this presentation we will be concerned with four Protégé tabs namely Active Ontology, Entities, Classes and Object Properties

• We will define the classes and subclasses for the Pizza Ontology

• It should be remembered that the Thing class is the parent of all classes in Protégé

• The main base classes of the Pizza Ontology are Pizza, Pizza_topping and Pizza_base

• We will also specify different properties for the Pizza Ontology like base and topping

Basic Terminologies: Classes, Properties and Individuals

• The concept of a class in OWL is similar to that in Object Oriented Programming

• We can have classes for any real world entity like Car, Student, Pizza etc.

• Object Property defines the relationship between the objects of two classes

• Individuals are like members of a class like Corolla, Cultus etc. can be individuals of the Car class

Protégé Download

• First you need to download the Protégé software which is freely available from the Internet (Google Search)

• On the other hand you can directly access Stanford University website (http://protege.stanford.edu/) to download Protégé

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