[Wu, Tao] Wuhan Univ Technol, Sch Management, Wuhan 430074, Hubei, Peoples R China.^[Zhu, Cheng] Natl Univ Def Technol, Sch Informat Syst & Management, Changsha 410073, Hunan, Peoples R China.^[Qu, Shao-Cheng] Huazhong Normal Univ, Dept Informat Technol, Wuhan 430079, Peoples R China.