1. School of Computer Science and Engineering, Macau University of Science and Technology, Taipa, Macao
2. Macau University of Science and Technology, Taipa, Macao
3. Washington State University, Pullman, United States
4. Singapore Management University, Singapore, Singapore
5. Harbin Institute of Technology Shenzhen, Shenzhen, China
6. Department of Computing, The Hong Kong Polytechnic University, Kowloon, Hong Kong
7. School of Software, Dalian University of Technology, Dalian China