1. Coordinated Innovation Center for Computable Modeling in Management Science, Yango University, Fuzhou, Fujian, People's Republic of China
2. Coordinated Innovation Center for Computable Modeling in Management Science, Tianjin University of Finance and Economics, Tianjin, People's Republic of China
3. Department of Mathematical Sciences, Lakehead University Thunder Bay, Thunder Bay, Ontario, Canada
4. Department of Mathematics and Statistics, University of Minnesota Duluth, Duluth, MN, USA