1. Software Engineering College, Zhengzhou University of Light Industry, P.R.China and ZZULI Research Institute of Industrial Technology, P.R.China
2. Human Resources Office, Zhengzhou University of Light Industry, P.R.China
3. Artificial Intelligence Laboratory, China Mobile Communication Group Tianjin Co., Ltd., P.R.China and Software Engineering College, Zhengzhou University of Light Industry, P.R.China and Tianjin University, P.R.China
4. School of Information Technology, Halmstad University, Sweden