1. School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, China
2. Department of Management Science and Engineering, Dalian University of Technology, Dalian, China
3. Department of Computer Science, College of Computer and Information Sciences, King Saud University, Riyadh, Saudi Arabia
4. College of Energy and Electrical Engineering, Hohai University, Nanjing, China
5. College of Electronic Information and Telecommunication Engineering, Northeastern University, Shenyang, China
6. Department of Computer Engineering and Mathematics, University of Rovira i Virgili, Tarragona, Spain
7. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China