1. Computational Mathematics Research Center, Guizhou University of Finance and Economics, Guiyang, People's Republic of China
2. School of Mathematics and Statistics, Guizhou University of Finance and Economics, Guiyang, People's Republic of China
3. College of Information Science and Computer Engineering, Wenzhou Medical University, Wenzhou, People's Republic of China
4. School of Statistics and Mathematics, Shanghai Lixin University of Accounting and Finance, Shanghai, People's Republic of China