1. Centre for Complex Systems and Complex Systems Research Group, Faculty of Engineering and IT, The University of Sydney, NSW, Australia
2. Department of Computer Science, Portland State University, Portland, OR, USA
3. Santa Fe Institute, Santa Fe, NM, USA
4. School of Informatics and Computing, Indiana University, Bloomington, IN, USA
5. Department of Social and Decision Sciences, Carnegie Mellon University, Pittsburgh, PA, USA
6. CSIRO Data 61, Marsfield, NSW, Australia
7. Department of Space, Earth and Environment, Chalmers University of Technology, Göteborg, Sweden
8. School of Education, University of Technology Sydney, NSW, Australia
9. Center for Collective Dynamics of Complex Systems and Department of Systems Science and Industrial Engineering, Binghamton University, State University of New York, NY, USA