1. School of Government Audit, Nanjing Audit University, Nanjing, China
2. Business School, Nanjing Normal University, Nanjing, China
3. Department of Statistics, Computer Science and Mathematics, Public University of Navarre, Campus Arrosadia sn, Pamplona, Spain
4. Machine Intelligence Institute, Iona College, New Rochelle, NY, USA
5. Faculty of Civil Engineering, Slovak University of Technology, Slovakia, Palacky Univ Olomouc, Fac Sci, Dept Algebra & Geometry, Olomouc, Czech Republic