[1] Peking Univ, Changsha Inst Comp & Digital Econ, Sch Math Sci, Natl Engn Lab Big Data Anal & Applicat, Beijing, Peoples R China
[2] Shanghai Univ Finance & Econ, Sch Publ Econ & Adm, Shanghai, Peoples R China
[3] Zhongnan Univ Econ & Law, Sch Finance, Wuhan, Peoples R China
[4] Peking Univ, Inst Digital Finance, Natl Sch Dev, Beijing, Peoples R China
[5] Zhongnan Univ Econ & Law, Editorial Dept Journal, Wuhan, Peoples R China