Su Yusong is a Professor in the Department of Political Science at Tsinghua University and Director of the Institute for Quantitative Social Science Methods. He received his PhD in Political Science from the City University of New York in 2009, and after completing postdoctoral research at Columbia University in 2010, he joined the Department of Political Science at Tsinghua University. He has long focused on the development and application of quantitative methods in political science, and has conducted in-depth research on issues in China’s political transformation.

He has proposed influential theoretical innovations and practical solutions to the classic problem of missing data in quantitative analysis, and has made important contributions to the study of public behaviour and values in China, as well as changes in state–society relations. His main research areas include comparative democratisation, comparative political economy, and political methodology (including Bayesian methods, causal inference, missing data imputation, multilevel regression analysis, and data visualisation), as well as comparative politics. He has produced substantial achievements in quantitative methodology research, and the R packages he has developed are widely used by the academic community both in China and internationally.