[Li, Zhoujun; Chen, Yiming; Liu, Junwan] Natl Univ Deference Technol, Sch Comp, Changsha, Hunan, Peoples R China.
[Liu, Junwan] Cent South Univ Forestry & Technol, Sch Comp Sci, Changsha, Hunan, Peoples R China.
[Li, Zhoujun] Beihang Univ, Sch Engn & Comp Sci, Beijing 100191, Peoples R China.
[Liu, Feifei] Cent South Univ Forestry & Technol, Lib, Changsha, Hunan, Peoples R China.
[Chen, Yiming] Hunan Agr Univ, Sch Informat Sci & Technol, Changsha, Hunan, Peoples R China.