Evaluation

Abstract

Research on adaptive interactive systems has produced numerous adaptive systems, such as hypertext, office, or speech dialog systems (see Chapter 2). However, little empirical evidence exists on topics such as the effect of adaptations on the user-system interaction and the decision when and how to apply adaptations. For example, Lavie et al. (2005) criticize this lack of empirical foundation. In order to allow developer to implement adaptations properly, evaluation evidence has to be provided that is applicable to all interactive systems. In this chapter, we present the results of user tests for user modeling algorithms and adaptations. The evaluations have been performed such that the results may be transferred to different interactive systems. In doing so, we contribute to building a body of generic adaptation evidence.