1. Chongqing Institute of Green and Intelligent Technology, 376348 Chongqing, Sichuan, China, (e-mail: luoxin21@cigit.ac.cn)
2. College of Computer Science, Chongqing University, Chongqing, Chongqing, China, (e-mail: yueyzhou@outlook.com)
3. Chongqing Institute of Green and Intelligent Technology, 376348 Chongqing, Chongqing, China, (e-mail: liuzhigangx@gmail.com)
4. Computer Science and Technology, Wuhan University of Technology, 12565 Wuhan, Hubei, China, 430070 (e-mail: hulun@ms.xjb.ac.cn)
5. Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, New Jersey, United States, 07102 (e-mail: zhou@njit.edu)