1. School of Mathematics and Computer Science, Quanzhou Normal University, Quanzhou, China
2. Key Laboratory of Intelligent Computing and Information Processing of Fujian Province University, Quanzhou Normal University, Fujian, Quanzhou, China
3. Fujian Provincial Key Laboratory of Data-Intensive Computing, Quanzhou, China
4. Fujian Key Laboratory of Financial Information Processing, Putian University, Fujian Putian, China