1. School of Information and Control, Liaoning Petrochemical University, Fushun 113001, China
2. School of Computer Science and Software Engineering, Monmouth University, West Long Branch, NJ 07764, USA
3. School of Economics and Management, Shangqiu Normal University, Shangqiu 476000, China
4. School of Electronic and Information Engineering, Tongji University, Shanghai 201804, China