We first have a look at the overall information architecture of AIMS.
The subject domain of an application or course is described by means of a domain model. This is done through a concept map (CM). In the concept map the concepts are linked to each other. The links are qualified to indicate the type of the relationship. The domain model thus describes an ontology.
In the library model documents are linked to concepts. The library model can describe this independent of the course or courses in which the documents and concepts are used.
The course model describes a course in terms of tasks the user has to perform. Tasks teach the student about concepts. There are also prerequisites to indicate that certain things must be done before certain other things.
The learner model is an overlay model indicating the status of the user for tasks, the knowledge about concepts and the documents that were read. The user has influence on the model and can indicate that certain concepts are already known.