1. School of Electrical Engineering, China University of Mining and Technology, Xuzhou, China
2. School of Electrical Engineering, Aalto University, Espoo, Finland
3. Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), Singapore
4. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
5. School of Information Science and Technology, Qingdao University of Science and Technology, Qingdao, China