1. School of Educational Science, Hunan Normal University, Changsha, China
2. Key Laboratory of Big Data Research and Application for Basic Education, Hunan Normal University, Changsha, China
3. College of Computer Science and Engineering, Hunan Normal University, Changsha, China
4. Department of Math and Computer Science, Brandon University, Brandon, Canada
5. Research Centre for Interneural Computing, China Medical University, Taichung, Taiwan
6. Department of Computer Science and Math, Lebanese American University, Beirut, Lebanon