“…The method of back-propagation neural network is widely used in the community of computational intelligence due to its simplicity and effectiveness, so that the theoretical backgrounds and various applications of this approach can be found in many volumes of relative literature (Adeli, 2001;Arslan and Ince, 1996;Bodri, 2000;Hagan et al, 1995;Hirose et al, 1991;Kerh et al, 2003;Kerh and Yee, 2000;Lee and Jeng, 2002;Liong et al, 2000;Pandey and Barai, 1995;Tasadduq et al, 2002;Thirumalaiah and Makarand, 2000;Villiers and Barnard, 1993;Yagawa and Okuda, 1996). In general, this multi-layered neural network includes input layer, hidden layer, and output layer.…”