1. School of Economics and Finance, Xi’an Jiaotong University, Xi’an, China
2. School of Economics and Business Administration, Chongqing University, Chongqing, China
3. Department of Statistics, Hunan University, Changsha, China
4. School of Mathematics Statistics, Hainan Normal University, Haikou, China
5. Key Laboratory of Data Science and Intelligence Education Ministry of Education, Hainan Normal University, China
6. Key Laboratory of Computational Science and Application of Hainan Province, Haikou, China