1. Department of ComputerHuainan Union UniversityHuainan232038China
2. School of Electronic and Information EngineeringAnhui University of Science & TechnologyHuainan232001China
3. School of MathematicsPhysics and StatisticsShanghai University of Engineering ScienceShanghai201620China
4. School of Mathematics and Big DataAnhui University of Science & TechnologyHuainan232001China