作者机构:[1]Information School, Capital University of Economics and Business, Beijing-100070, P. R. China, [2]School of Computer, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China
相关基金:Supported by the Young Scientists Program of CUEB ( No. 2014XJQ016, 00791462722337 ), National Natural Science Foundation of China (No. 61302087), Young Scientific Research Starting Foundation of CUEB and Improve Scientific Research Foundation of Beijing Education.