Wei Wang1, Ryan Kennedy2, David Lazer3, Naren Ramakrishnan1. 1. Discovery Analytics Center, Virginia Tech, Arlington, VA 22203, USA. 2. Center for International and Comparative Studies, University of Houston, Houston, TX 77204, USA. rkennedy@uh.edu. 3. Lazer Lab, Northeastern University, Boston, MA 02115, USA. Institute for Quantitative Social Science, Harvard University, Cambridge, MA 02138, USA.