[Zou, Songshang; Xiao, Guangyi; Qin, Zhen; Chen, Hao] Hunan Univ, Coll Comp Sci & Elect Engn, Changsha 410082, Peoples R China.
[Feng, Hui] Hainan Vocat Univ Sci & Technol, Sch Informat Engn, Haikou 571126, Peoples R China.
[Feng, Hui] Jiangsu Vocat & Tech Coll Finance & Econ, Sch Intelligent Engn Technol, Huaian 223003, Peoples R China.
[Cai, Weiwei] Cent South Univ Forestry & Technol, Sch Logist & Transportat, Changsha 410004, Peoples R China.
[Cai, Weiwei] AiTech Artificial Intelligence Res Inst, Changsha 410000, Peoples R China.