[Yang, Jiumin; Gou, Jiangfeng; Li, Yan; Yu, Qiuchen] Cent China Normal Univ, Fac Artificial Intelligence Educ, Wuhan, Peoples R China.
[Pi, Zhongling] Shaanxi Normal Univ, Key Lab Modern Teaching Technol, Minist Educ, Xian, Peoples R China.
[Pi, Zhongling] Shaanxi Normal Univ, Key Lab Modern Teaching Technol, Minist Educ, 199 South Changan Rd, Xian 710062, Shaanxi, Peoples R China.
[Yang, Jiumin; Yang, JM] Cent China Normal Univ, Fac Artificial Intelligence Educ, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.