1. School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
2. School of Information Science and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
3. School of Data Science and Artificial Intelligence, Guangdong University of Finance, Guangzhou, China
4. School of Financial Mathematics and Statistics, Guangdong University of Finance, Guangzhou, China
5. School of Internet Finance and Information Engineering, Guangdong University of Finance, Guangzhou, China