Hypermedia applications offer users the impression that there are many meaningful ways to navigate through a large body of information nodes. This rich link structure not only creates orientation problems, it may also be a source of comprehension problems when users follow paths through the information which the author did not foresee. Adaptive techniques have been used by a number of researchers [ 1,2,4,5, The majority of these adaptive hypermedia systems (AHS) have been used in educational applications.
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Bra et al. (1999) studied this question.