Information Technology Journal1812-56381812-5646Asian Network for Scientific Information10.3923/itj.2007.739.744HewahiNabil M. 5200765In this study, we present a new rule structure called Hierarchical
Rule (HR) to be an effective knowledge representation in Intelligent Tutoring
System (ITS) and in Intelligent Educational Systems (IES). The structure of
the rule shall expedite the process of inference and allow the system to work
in forward as well as backward chaining. The HR structure will help in putting
the knowledge in a very systematic way, which will lead to well structured system.
This representation can be used very effectively in the pedagogical model to
inform the system, which method should be followed up with the current user.
The pedagogical model shall benefit from the user s model (history of the user)
to choose the proper explanation method. We also present an algorithm in the
novel form to represent the HRs using the neural networks to enhance the performance
of the rule system. We call this algorithm HRANN. In addition to that, a general
method concerning the adaptation of pedagogical model is introduced. This method
is mainly depend on competitive learning (unsupervised learning) if enough number
of examples is not given. The system s performance will keep improving as long
as the system is working for various users. The system shall benefit from its
experience. In case enough number of examples are provided, the traditional
method of backpropagation algorithm can be used.]]>Bharadwaj, K. and K. Jain,199281934Bharadwaj, K. and J. Silva,19981515121130Brusilovsky, P.,199941931Compton, P. and D. Richards,199849895926Gilbert, J.,20002000Hatzilygeroudis, I. and J. Prentzas,200426447492Hatzilygeroudis, I. and J. Prentzas,20052005Hewahi, N.,200244451457Hewahi, N.,20042004pp: 174180Michalski, R. and P. Winston,198629121145Pek, P. and K. Poh,20054207233Simic, G. and V. Deveddzic,200325231246Tan, C., T. Quah and H. The,19961996Towell, G. and J. Shavlik,19911991pp: 977984Towel, G. and S. Shavlik,199470119165Vanlehn, K. and N. Zhendog,200112154184