[1] Northeast Normal Univ, Media Sci Sch, Changchun, Peoples R China
[2] Kyushu Univ, Grad Sch Informat Sci & Elect Engn, Fukuoka, Japan
[3] Jilin Univ, Educ Technol Ctr, Changchun, Peoples R China
[4] Kobe Univ, Informat Sci & Technol Ctr, Kobe, Japan
[5] Kyushu Univ, Res Inst Informat Technol, Fukuoka, Japan