1. School of Economics and Management, University of Science and Technology Beijing, Beijing 100083, China
2. School of Economics and Management, China University of Geosciences Beijing, Beijing 100083, China
3. Key Laboratory of Carrying Capacity Assessment for Resource and Environment, Ministry of Land and Resources, Beijing 100083, China
4. Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts 02215, USA
5. Department of Computer Science, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
6. Network Science and Technology Center, Rensselaer Polytechnic Institute, Troy, New York 12180, USA