[Liu, Junwan] Cent S Univ Forestry & Technol, Sch Comp & Informat Engeering, Hunan, Peoples R China.
[Li, Zhoujun; Chen, Yiming; Liu, Junwan] Natl Univ Def Technol, Sch Comp, Changsha, Hunan, Peoples R China.
[Li, Zhoujun] Beihang Univ, Sch Engn & Comp Sci, Beijing, Peoples R China.
[Hu, Xiaohua] Drexel Univ, Coll Informat Sci& Technol, Philadelphia, PA USA.
[Chen, Yiming] Hunan Agr Univ, Sch Informat Sci &Technol, Hunan, Peoples R China.