1. Xiangtan University,School of Computer Cyberspace,Xaingtan,China
2. Hunan Police College Hunan Provincial Citizen Information Security Administration,Changsha,China
3. Hunan Provincial Citizen Information Administration,Changsha,China
4. Zhejiang Economic Information Center,HangZhou,China
5. Hangzhou Dianzi University Institute of Operational Research and Cybernetics,Hangzhou,P. R. China,310018