學術研究

Endogenous Riot Networks: The Arab Spring and the Spread of Revolutions through Online Social Media

日期 2020-09-08 (週二)
時間 02:30 PM
地點 Conference Room B110
主持人 Professor Le-Yu Chen
演講者 Professor Chih-Sheng Hsieh (謝志昇)
演講者簡介 Professor Hsieh received his Ph.D. in Economics from the Ohio State University in 2013. He is currently an Associate Professor at National Taiwan University. His research fields are Applied Econometrics, Labor Economics, Health Economics, and Social Networks.
摘要 We analyze protest participation as a binary choice model in a communication network where agents can coordinate actions. The formation of links in the network, the action choices, and beliefs about the support in the population are all endogenous. We provide a complete characterization of the equilibrium action choices, beliefs and networks, where agents choose their strategies (actions and links) according to a perturbed best response update process, and update their beliefs following DeGroot’s rule. We show that thresholds exist in the linking cost and in the conformity parameter such that all agents coordinate on the same action. We also find that the introduction of incomplete information via beliefs lowers the threshold (i.e. makes protests more likely). Moreover, we show how the theoretical model can be efficiently estimated using cross sectional data on agents’ choices and their network of interactions from Twitter for a large scale protest in Egypt. Our estimation results show that both, the local peer effect and the global conformity effect, are significant in explaining protest participation.