Adaptive and Dynamic Hypertext Tutoring Systems Based on Knowledge Space Theory
Dietrich Albert, Cord Hockemeyer · 1997
E�Mail � fDietrich.AlbertjCord.Hockemeyerg � kfunigraz.ac.at Knowledge space theory provides a formal model for representing students� knowledge and describing the structure of a domain of knowledge. A similar formal structure can be used to described the structure of hypertexts. The combination of knowledge space theory and the formal hypertext model leads to a framework for intelligent tutoring systems which provides individualized learning paths to a student. Using powerful procedures from relational database systems and from knowledge space theory � we get e. g. an e�cient selection of appropriate teaching documents. 1 Introduction and previous results Doignon and Falmagne �1 � introduced the theory of knowledge spaces which provides a mean to formally describe the structure of a given domain of knowledge. We introduce the theoretical concepts in Section 1.1 below. The basic idea is the description of a student�s knowledge by the set of problems �items � he or she is able to solve. The set of possible knowledge states is