中文摘要：

Yi Yang is a Ph.D. and associate professor of the Computer Science Department, School of Information Science and Technology, Sun Yat-sen University. Her current research interests are system modeling and op- timization and evolutionary computing methods. E-mail： issyy@mail.sysu.edu.cn Lai Jieling is a master candidate of School of Information Science and Technology, Sun Yat-sen University. Her research interests include intelligent algorithms and multimedia information processing.