Adaptive Hypermedia Searches for Mobile PDA

This paper focuses on devising a new search mechanism, called an adaptive hypermedia search, which utilizes hierarchical structure of hypermedia objects within a given e-learning service domain for mobile PDA device which has usually limited resources. Hyperlinked contents can be theoretically represented as graphs to generate hyperlinked objects for more convenient and effective searching of relevant contents. A mathematical model is developed to structure hyperlinked objects optimally so that most relevant contents can be reachable more efficiently with the optimal-structured content objects. We developed a tree-filtering algorithm and a top k algorithm that can be used to provide search recommendations for mobile PDA systems.