Research Interests

Econometrics; Productivity & Efficiency Analysis; Spatial & Network Econometrics; Big-data/Large-dimensional Models & Shrinkage; Racial Profiling

Publications

1. Testing for Peer Effects without Specifying the Network Structure (with X. Liu).  Journal of Econometrics (2026) 253 106-124 [working paper version]

2. What Makes a Classmate a Peer? Examining which peers matter in NYC elementary schools (with W. Horrace, J. Presler and A. Schwartz). Journal of Population Economics (2025) 38:52. [working paper version]

3. Shared Hardships Strengthen Bonds in Employment: Negative Shocks, Embeddedness and Employee Retention (with A. Balthrop). Journal of Business Logistics, (2025) 46:e70017. [working paper version]

4. The Conditional Mode in Parametric Frontier Models (with W. Horrace and Y. Yang). Journal of Productivity Analysis (2023) 60 333-343. [working paper version]

5. LASSO for Stochastic Frontier Models with Many Efficient Firms (with W. Horrace and Y. Lee).  Journal of Business and Economic Statistics (2023) 41:4 1132-1142. [working paper version]

6. Network Competition and Team Chemistry in the NBA (with W. Horrace and S. Sanders).  Journal of Business and Economic Statistics (2022) 40:1 35-49. [working paper version]

7. How artificial intelligence will affect the future of retailing (with A. Guha, D. Grewal, P. Kopalle, M. Haenlein, M. Schneider, R. Moustafa, D. Hegde and G. Hawkins). Journal of Retailing (2021) 97: 28-41. [Published Copy]

8. Stochastic Frontier Models with Network Selectivity (with W. Horrace). Journal of Productivity Analysis (2018) 50: 101-116. [working paper version]

Working Papers

• Mass Shootings, Community Mobility, and the Relocation of Economic Activity (with M. Cuellar) [working paper version, appendix] revision requested

• Duration Models for Non-repeated Events: a Generalized Correlated Random Effects Approach (With J. Yoon) [working paper version]

• Police Officer Experience and Racial Bias over the U.S. Great Recession (with W. Horrace and S. Rohlin) [working paper version]

• Test for Network Structure (with X. Liu) [working paper version]

• Model Selection via SSE Ratios (with Y. Lee)

Work in Progress

• Specification Tests for Spillover Structure (with X. Liu)

• Spatial Matching: The Impact of Wildlife Crossings on Roadkill and Road Safety (with D. Park, T. Young and Z. Tipton)

• AI and the Demand for Human Tutors (with S. Gunnoe)

• Spatial Synthetic Control (with X. Liu)

• Bounded Outcome and Violation of Parallel Trends 

• Peer Effects in Swimming