1. Faculty of Computer Science and Information Technology, Digital Fujian Institute of Big Data for Agriculture and Forestry, Fujian Agriculture and Forestry University, Fuzhou, People's Republic of China
2. College of Mathematics and Computer Science, Fujian Normal University, Fuzhou, People's Republic of China
3. School of Mathematics and Physics, Fujian Provincial Key Laboratory of Big Data Mining and Applications, Fujian University of Technology, Fuzhou, People's Republic of China