Rao Congjun was born in 1979. He is a postgraduate and iecturer. His research interests are decision making theory and application, system control and optimization. E-mail : raocjun79@163.com Xiao Xinping was born in 1965. He is a professor at School of Science in Wuhan University of Technology. His research interests are system control and optimization and grey system theory. E-mail: xiaoxp@263.net Peng Jin was born in 1961. He is a professor at College of Mathematics and Information Science in Huanggang Normal University. His research interests are uncertainty theory and uncertain programming. E-mail: peng@hgnc.net