1. School of Computer & Software, Nanjing University of Information Science & TechnologyNanjingPeople's Republic of China
2. School of Mathematics & Statistics, Nanjing University of Information Science & TechnologyNanjingPeople's Republic of China
3. Binjiang College, Nanjing University of Information Science & TechnologyNanjingPeople's Republic of China
4. Department of Electrical and Computer EngineeringUniversity of WindsorONCanadaN9B 3P4