[Du, Siyuan] Southwestern Univ Finance & Econ, Econ Sch, Chengdu 610064, Peoples R China.
[Du, Siyuan] Sichuan Tourism Univ, Res Ctr Smart Tourism Technol Applicat & Innovat, Chengdu 610100, Peoples R China.
[Bahaddad, Adel A.] King Abdulaziz Univ, Fac Comp & Informat Technol, Informat Syst Dept, Jeddah, Saudi Arabia.
[Jin, Maozhu] Sichuan Univ, Business Sch, Chengdu 610065, Peoples R China.
[Zhang, Qian] Chengdu Agr Coll, Econ & Management Sch, Chengdu 610000, Peoples R China.