1. School of Computer and Information Engineering, Xiamen University of Technology, Xiamen, Fujian, China
2. Department of Automation, Xiamen University, Xiamen, Fujian and Shenzhen Research Institute of Xiamen University, Shenzhen, Guangdong, China
3. Cloud Services Department of China Telecom Fujian Cloud business division (Xiamen Branch), Xiamen, Fujian, China
4. School of Electromechanical and Information Engineering, Putian University, Putian, Fujian, China
5. School of Economic and Management, Xiamen University of Technology, Xiamen, Fujian, China