1. School of Computer Science and Engineering, Key Laboratory of Intelligent Perception and Systems for High-Dimensional Information of Ministry of Education, and Jiangsu Key Laboratory of Image and Video Understanding for Social Security, Nanjing University of Science and Technology, Nanjing, China
2. School of Computer Science and Engineering, PCA Lab, Key Laboratory of Intelligent Perception and Systems for High-Dimensional Information of Ministry of Education, and Jiangsu Key Laboratory of Image and Video Understanding for Social Security, Nanjing University of Science and Technology, Nanjing, China
3. Baidu Inc, Beijing, China
4. Management Science and Information Systems Department, Rutgers Business School, Rutgers University, Newark, NJ, USA