[Cui, Jianqun; Jia, Keming] Cent China Normal Univ, Dept Comp Sci, Beijing, Peoples R China.
[Xiong, Naixue] Jiangxi Univ Finance & Econ, Sch Informat Technol, Nanchang, Peoples R China.
[Xiong, Naixue] Colorado Tech Univ, Sch Comp Sci, Colorado Springs, CO USA.
[Park, Jong Hyuk] Seoul Natl Univ Sci & Technol SeoulTech, Dept Comp Sci & Engn, Seoul, South Korea.
[Wu, Libing] Wuhan Univ, Comp Sch, Wuhan, Peoples R China.