1. Key Laboratory of Knowledge Engineering with Big Data (Hefei University of Technology), Ministry of Education, School of Computer Science and Information Engineering, Hefei University of Technology, Hefei, China
2. Solution and Architecture Research Department, NSFOCUS, China
3. Southeast Institute of Information Technology, Beijing Institute of Technology, Fujian, China
4. Department of Electrical and Computing Engineering, Queen's University, Kingston, ON, Canada
5. Department of Intelligent Systems, CyberSecurity Group, TU Delft, Netherlands