Part II : Using Protege

 Open the protege software to start using it. Figure 1 shows the interface of protege.

Figure 1 : Protege interface

 

 

 

Part III : Protege tutorial

 

This protege tutorial are based on a series of video by Dr. Noureddin Sadawi.

 

A. Introduction to Ontology 

1. Figure 2 shows an ontology of Person where its subclasses are Student and Lecturer.

   

   Student  studies  Module

   Lecturer  teaches  Module

Figure 2 : Person subclasses

Figure 3 : Module subclasses

2. Figure 3 shows other example of ontology where both CSModule and MathModule are subclasses of Module.

B. Creating Ontology Class

 

 1. Click on classes tab to create class.

Figure 4 : Classes tab selected

2. Add a new class. We add a new class named Person.

Figure 5 : Person class added

3. Next, add another two classes named Student and Lecturer under Person class.

Figure 6 : Student class added

Figure 7 : Lecturer class added

4. Repeat the process of adding class with a new Module class. Then, add two new class under Module named CSModule and MathModule.

Figure 8 :  Created Person and Module class with their subclasses

5. Click on any of the module and click Disjoint with at the description

Figure 9 : Disjoint with option

6. Click ctrl and click on MathModule, Lecturer, and Student to be Disjoint with.

Figure 10 :Disjoint of MathModule, Lecturer and Student

Reason for the Disjoint:

-To avoid overlapping between classes, ie subclass, or an instances or an individual can only be an instances of one class so we can avoid multiple inheritances.