1. School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, China
2. School of Computer Science and Engineering, Nanyang Technological University, Jurong West, Singapore
3. School of Information Engineering, Henan Institute of Science and Technology, Xinxiang, China
4. Key Laboratory of Knowledge Automation for Industrial Processes, Ministry of Education, School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing, China
5. School of Computer Science and Information Security, Guilin University of Electronic Technology, Guilin, China
6. Chinese Electronics Standardization Institute, Beijing, China