Framework
A common method or framework of design for an adaptive educational system is with three inter-dependent modules.
- Domain Model - The domain model contains several concepts that stand as the backbone for the content of the system. Each concept has a set of topics. Topics represent individual pieces of knowledge for each domain and the size of each topic varies in relation to the particular domain. Additionally, topics are linked to each other forming a semantic network. This network is the structure of the knowledge domain.
- User Model - The student model consists of a personal profile (which includes static data, e.g., name and password), cognitive profile (adaptable data such as preferences), and a student knowledge profile.
- Adaptation Module - The adaptation module displays information to the user based on his or her cognitive preferences. For instance, the module will divide a page's content into chunks with conditions set to only display to certain users or preparing two variants of a single concept page with a similar condition.
The system architecture utilizes the three models in tandem. The conditional elements of these modules use simple variables representing how much to weight certain content(i.e. The likelihood of a piece of content showing up) depending on the user's preferences and history. Through use of the user model, a user can see basic concepts without any restriction. After seeing the basic concepts, a variable updates and allows the user to view advanced concepts in relation to the concept they have just seen. Additionally, as the user peruses more content, the system keeps track of the variables to build and adjust a knowledge level variable. As the user is deemed knowledgeable enough by the conditions, links and concepts considered too easy will be removed to streamline and simplify the experience for the user.
Read more about this topic: Adaptive Educational Hypermedia
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