[Luo, Haiming;Du, Hongwei] Harbin Inst Technol, Shenzhen Grad Sch, Dept Comp Sci & Technol, Harbin, Peoples R China.^[Luo, Haiming;Du, Hongwei;Zhu, Rongrong] Shenzhen Key Lab Internet Informat Collaborat, Shenzhen, Peoples R China.^[Kim, Donghyun] North Carolina Cent Univ, Dept Math & Phys, Durham, NC USA.^[Ye, Qiang] Univ Prince Edward Isl, Dept Comp Sci & Informat Technol, Charlottetown, PE C1A 4P3, Canada.^[Jia, Jinglan] Cent China Normal Univ, Dept Math, Wuhan, Peoples R China.