[Wang, Xiaoguang; Zhao, Wanli; Wang, Shutong; Wang, XG] Wuhan Univ, Sch Informat Management, Wuhan 430072, Peoples R China.
[Wang, Shutong] Cent China Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Peoples R China.
[Li, Duantengchuan] Wuhan Univ, Sch Comp Sci, Wuhan 430072, Peoples R China.
[Wang, Jing] Chongqing Univ Posts & Telecommun, Sch Automat, Chongqing 400065, Peoples R China.
[Wang, Xiaoguang; Wang, XG; Wang, Jing] Wuhan Univ, Intellectual Comp Lab Cultural Heritage, Wuhan 430072, Peoples R China.