[Dai, Zhicheng; Xiong, Junxia] Cent China Normal Univ, Fac Artificial Intelligence Educ, Natl Res & Engn Ctr Elearning, Wuhan, Hubei, Peoples R China.
[Wang, Ling] Cent China Normal Univ, Sch Informat Management, Wuhan, Hubei, Peoples R China.
[Zhao, Liang; Peng, Xian] Cent China Normal Univ, Fac Artificial Intelligence Educ, Natl Engn Res Ctr Educ Big Data, Wuhan, Hubei, Peoples R China.
[Wang, Ling] Cent China Normal Univ, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.