Time-Based Extensions to Adaptation Techniques ⋆

Abstract. In this paper we present an approach to time-based adaptation in adaptive hypermedia systems. Time is used as a part of the context (or environment) model. We have proposed extensions of known adaptation techniques by means of the notion of time. We experimented with proposed extensions and implemented a software system called TIM, which adapts presentation of educational module administrative information according user characteristics and a context represented by time of information presentation.