Institution: | Ya-zhao L 1,2 , Ri-quan ZHANG 1,3, , Zhen-sheng HUANG 4 1 Department of Statistics, East China Normal University, Shanghai 200062, China 2 Institute of Operational Research and Cybernetics, Hangzhou Dianzi University, Hangzhou 310018, China 3 Department of Mathematics, Shanxi Datong University, Datong 037009, China 4 School of Science, Nanjing University of Science and Technology, Nanjing 210094, China |