Ruiqi Wang

Others

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Awards and Grants

NUS Goh Keng Swee Scholarship
NUS PhD Research Grant
NUS Research Scholarship
Tianjin University Academic Scholarship

Miscellaneous

☕ Coffee enthusiast, here is my coffee map

🐶 Dog lover, always happy to make a new canine friend

Research

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Working Papers

Connect or Clique: The Role of Agent Networks in the Housing Market with Hefan Zheng
Job Market Paper

Abstract

Online real estate platforms make listings broadly accessible, yet agents’ repeated interactions create informal collaboration networks that can segment buyers’ effective information sets. We study how agents’ informal collaboration networks shape buyer search and matching outcomes in the housing market. Using detailed buyer-agent-property records covering property showings and transactions, we apply an unsupervised machine learning method to recover agent networks from historical collaboration patterns. We find that buyers served by agents embedded in larger networks view more properties, search longer, and purchase higher-priced properties, whereas those served by agents in more exclusive networks search less and purchase lower-priced properties. We develop and estimate a structural model of buyer search and purchase in which agent networks shape buyers’ effective information sets through listing awareness and network-based steering. Counterfactual simulations quantify how expanding information access and removing network-based steering affect buyer search, match quality, and welfare.

Teaching

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Department of Economics, National University of Singapore

EC6103 Econometric Modelling and Applications II (PhD level; TA)Spring 2025
EC5103 Econometric Modelling and Applications I (PhD level; TA & Guest Lecturer)Fall 2024
EC3303 Econometrics I (Undergraduate level; TA)Spring 2024

School of Mathematics, Tianjin University

Numerical Analysis (Undergraduate level; TA)Spring 2020