1. Business School, Nanjing Normal University, Nanjing, People's Republic of China
2. Faculty of Civil Engineering, Slovak University of Technology, Bratislava, Slovakia
3. Institute for Research and Applications of Fuzzy Modeling, University of Ostrava, Ostrava, Czech Republic
4. Machine Intelligence Institute, Iona College, New York, USA
5. School of Management, Wuhan University of Technology, Wuhan, People's Republic of China