1. School of Computer Science and Engineering and the State Key Laboratory of Subtropical Building and Urban Science, South China University of Technology, Guangzhou, China
2. Department of Computer Science, Guangdong University of Technology, Guangzhou, China
3. Information Technology Department GuangFa Securities Asset Management (Guangdong) Comapny Ltd., Guangzhou, China
4. College of Artificial Intelligence, NanKai University, Tianjin, China