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Reusability in the OntoID Authoring Tool

Java is used as the main language for developing the application and GUIs for the OntoID authoring tool. By combining the Java and XML technologies when creating application or working with information gives us portability, well-defined standards, extendibility, Internet compatibility, a variety of application and very important advantage we have is the option of reusing the code. We can create both Java application and XML document using a modular design, allowing for the reuse of both Java code and XML information.

In reusing Java code and XML information, we break the code into a number of modules, each of which performs a specific task. For example, in an assessment, we classify the modules for each type of question so that we can have a question bank. A question bank is a pool of questions which the instructors key in when they create an exercise or assessment for their students. Figure 7 shows an example of creating Multiple Choice Questions (MCQ).

Figure 7 Multiple choice question template

The questions in our online self assessment based on concept were organised. Each assessment is tightly integrated with the concept. For example, if the instructor creates an assessment for an object concept, all the questions together with the information associated with it will be saved into an object XML file. When the instructor wants to reuse again questions in the object concept in his or her new concept, he or she can simply search the question bank (XML tree). Suitable assessment types (multiple choice, fill-in-the-blanks, subjective or true/false) and corresponding questions for a particular object concept will be retrieved. The instructor can either reuse the whole assessment or choose only particular question(s) that suits his or her new assessment for a concept. The benefit of having such design is that it facilitates higher reusability. The instructor can easily reuse any question and the corresponding information without having to search the entire question bank.