[Yang, Wei; Yang, Xiao] Cent China Normal Univ, Natl Engn Res Ctr E Learning, Wuhan, Hubei, Peoples R China.
[Lu, Chun] Minist Educ, Res Ctr Sci & Technol Promoting Educ Innovat & Dev, Strateg Res Base, Wuhan, Hubei, Peoples R China.
[Li, Miaoyun] Cent China Normal Univ, Educ Informatizat Strategy Res Base, Minist Educ, Wuhan, Hubei, Peoples R China.
[Lu, Chun] Cent China Normal Univ, Fac Artificial Intelligence Educ, Wuhan, Hubei, Peoples R China.
[Li, Miaoyun] Cent China Normal Univ, Educ Informatizat Strategy Res Base, Minist Educ, Wuhan, Hubei, Peoples R China.