“…have defined fuzzy membership functions for fuzzy rules [6]; Law C.K. has used fuzzy numbers [7], and for more information on this issue consult: Chen and Lee [8], Chiu-Keung Law [7], Wang and Chen [9], Stathacopoulou [10], Guh [11], Gokmen [12], Hameed 13], Sirigiri Pavani [26], Neogi [30], Yadav [31], Gupta [18], Krzysztof [20], Mamatha [33], Chaudhari [29], Daud [32], Baylari and Montazer [14], Posey and Hawkes [15], Stathacopoulou [16], Bhatt and Bhatt [17], and Zhou and Ma [19]. The research works cited in the preceding paragraph indicates that the fuzzy logic, neural network and fuzzy neural network have already been employed in student modeling systems but almost nothing or very little has been mentioned about automatic generation of fuzzy membership function.…”