作者机构:[1]Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China, [2]College of Science, Hohai University, Nanjing 210098, China, [3]Department of Computer Science, Jina University, Guangzhou 510632, China
相关基金:the National Natural Science Foundation of China (Nos. 60573032, 60773092, 90604036, 90704004)