TY - JFULL AU - Leehter Yao and Chin-Chin Lin PY - 2007/2/ TI - Learning of Class Membership Values by Ellipsoidal Decision Regions T2 - International Journal of Computer and Information Engineering SP - 84 EP - 89 VL - 1 SN - 1307-6892 UR - https://publications.waset.org/pdf/14378 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 1, 2007 N2 - A novel method of learning complex fuzzy decision regions in the n-dimensional feature space is proposed. Through the fuzzy decision regions, a given pattern's class membership value of every class is determined instead of the conventional crisp class the pattern belongs to. The n-dimensional fuzzy decision region is approximated by union of hyperellipsoids. By explicitly parameterizing these hyperellipsoids, the decision regions are determined by estimating the parameters of each hyperellipsoid.Genetic Algorithm is applied to estimate the parameters of each region component. With the global optimization ability of GA, the learned decision region can be arbitrarily complex. ER -