1. Intelligent Information Processing Research Center, Fujian University of Technology, Fuzhou, Fujian, China
2. Fujian Provincial Key Laboratory of Big Data Mining and Applications, Fujian University of Technology, Fujian, China
3. Department of Information Technology, University of Manage and Technology, Haiphong, Vietnam
4. College of Computer Science and Engineering, Shandong University of Science and Technology, Qingdao, China