1. Assistant Professor, Department of Statistics & Data Science and Heinz College of Information Systems & Public Policy, Carnegie Mellon University. 4800 Forbes Avenue, Hamburg Hall, Pittsburgh PA 15213
2. Professor, Department of Government and Department of Statistics, Harvard University. 1737 Cambridge Street, Institute for Quantitative Social Science, Cambridge MA 02138
3. Professor, School of mathematics, Sun Yat-sen University, Guangzhou Guangdong 510275