National Natural Science Foundation of China(No.70971020); the Subject of Ministry of Education of Hunan Province,China(No.13C818); the Project of Industrial Science and Technology Support of Hengyang City,Hunan Province,China(No.2013KG63); the Open Project Program of Artificial Intelligence Key Laboratory of Sichuan Province,Sichuan University of Science and Engineering,China(No.2012RYJ03); the Fund Project of Humanities and Social Sciences,Ministry of Education of China(No.13YJCZH147); the Special Fund for Shanghai Colleges’ Outstanding Young Teachers’ Scientific Research Projects,China(No.ZZGJD12033);