1. Software College, Northeastern University, Shenyang, China
2. School of Software, Dalian University of Technology, Dalian, China
3. School of Medical Technology, Beijing Institute of Technology, Beijing, China
4. College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
5. Department of Computer and Information Science, University of Macau, Macau, China