作者机构:[1]School of Statistics, Central University of Finance and Economics, Beijing 100081, China, [2]College of AppliedSciences, Beijing University of Technology, Beijing 100124, China
相关基金:This work was supported by the National Natural Science Foundation of China under Grant No. 10971007; Foundation of Academic Discipline Program at Central University of Finance and Economics; Funding Project of Science and Technology Research Plan of Beijing Education Committee under Grant No. 00600054K1002; Fund of 211 Project at Central University of Finance and Economics; 2012 National Project of Statistical Research.