Recent Working Papers

Policy Evaluation with Nonlinear Trended Outcomes: COVID-19 Vaccination Rates in the US. 2024 (with Lynn Morgan and Peter C.B. Phillips) Online Supplementary Appendix

 

Unpublished Working Papers

         Pooling is Harmful Sometimes, March 2016

The Role of Labor Share in Relative Price Divergence  May 2015 (with Horag Choi, Ryan Greenaway-McGrevy and Youngse Kim)

Google Scholar Citation

Published Papers and Book Chapters

All papers below are copyrighted by their publishers and are not to be reproduced without the permission of the publishers.

1.     Depth-weighted means of noisy data: An application to estimating the average effect in heterogeneous panels. (with Yoonseok Lee), Journal of Multivariate Analysis, 196, 2023 105-165.

 

2.     Depth-Weighted Forecast Combination: Application to COVID-19 Cases (with Yoonseok Lee), Advanced in Econometrics, Essays in Honor of Joon Y. Park: Econometric Methodology in Empirical Applications. Emerald Publishing Limited, 2023. 235-260.

 

3.     Trimmed Mean Group Estimation (with Yoonseok Lee), Advanced in Econometrics, Essays in honor of M. Hashem Pesaran: Panel Modeling, Micro Applications, and Econometric Methodology. Emerald Publishing Limited. 2022. 177-202.

 

4.     Two-Way Fixed Effects versus Panel Factor Augmented Estimators: Asymptotic Comparison among Pre-testing Procedures (with Minyu Han, Jihun Kwak), Econometric Review, 41 (3), 2022. 291-320.

 

5.     Testing weak sigma convergence using HAR Inference, Li, T.,Pesaran, M.H. and Terrell, D. (Ed.) Essays in Honor of Cheng Hsiao (Advances in Econometrics, Vol. 41), Emerald Publishing Limited, pp. 25-72.

 

6.     Weak Sigma Convergence: Theory and Applications (with Jianning Kong and Peter C.B. Phillips), Journal of Econometrics,. 2019, (2), 185-207. Online Supplement (Appendix of Proofs) ,  Stata and Gauss Code, Additional MC results

 

7.     Estimation of Treatment Effects in Repeated Public Good Experiments (with Jianning Kong), 2019, In honor of Peter C.B. Phillips, Econometrics, 6(4), 43.

 

8.     Identifying Exchange Rates Common Factors (with Ryan Greenaway-McGrevy, Nelson C. Mark and Jyh-Lin Wu), International Economic Review, 2018, 59(4), 2193-2218. Data and Program

 

5      Lag Length Selection in Panel Autoregression (with Chirok Han and Peter C.B. Phillips)  Econometric Review 2017, Vol 36(1), 225—240. Gauss Code.

 

6      Identification of Unknown Common Factors: Leaders and Followers (with Jason Parker) Journal of Business, Economics & Statistics, 2016, Vol 34(2), 227—239 Additional MC results, Example GAUSS Code

7      Efficient Estimation and Inference for Difference-In-Difference Regressions with Persistent Errors" in honor of Peter C.B. Phillips, Advances in Econometrics, 2014, 33, 281--302 (with Ryan Greenaway-McGrevy and Chirok Han)

8      Average Estimation of Dynamic Panel Models with Nonstationary Initial Condition" In honor of Peter C.B. Phillips, Advances in Econometrics, 2014, Vol 33,  241--279 (with John Chao and Myungsup Kim)

9      Dynamic Panel Analysis under Cross-Sectional Dependence  Political Analysis, 2014, Vol 22(2), 258—273 (with K. Gaibulloev and T. Sandler).

10  Of Nickell Bias, Cross-Sectional Dependence, and Their Cures: Reply. Political Analysis, 2014, Vol 22(2), 279—280 (with K. Gaibulloev and T. Sandler).

11  X-Differencing and Dynamic Panel Model Estimation, Econometric Theory, 2014, 30(1), 201—251 (with Chirok Han and P.C.B. Phillips)

12  Common Drivers of Transnational Terrorism: Principal Component Analysis Economic Inquiry, 2013, 707-721. (with K. Gaibulloev and T. Sandler)

13  When Are Pooled Panel-Data Regression Forecasts of Exchange Rates More Accurate than the Time-Series Regression Forecasts?, Handbook of Exchange Rates, 2012, 256-281 (with Nelson C. Mark) Edited by J. James, I.W. Marsh and L. Sarno. John Wiley & Sons, Inc.

 

14   Standardization and Estimation of the Number of Factors for Panel Data, Journal of Economic Theory and Econometrics, 2012, 23(2), 79-88 (with Ryan Greenaway-McGrevy and Chirok Han)

15   Estimating the Number of Common Factors in Serially Dependent Approximate Factor Models, Economics Letters 2012, 116, 531--534 Additional MC results (with Ryan Greenaway-McGrevy and Chirok Han)

16   Asymptotic Distribution of Factor Augmented Estimators for Panel Regression In honor of Peter C.B. Phillips, Journal of Econometrics 2012, 169, 48--53 (with R. Greenaway-McGrevy and C. Han).

17   Uniform Asymptotic Normality in Stationary and Unit Root Autoregression Econometric Theory 2011, 27 (6), 1117--1151 (with C. Han and P.C.B. Phillips)

18   Bias Reduction in Dynamic Panel Data Models by Recursive Mean Adjustment under Cross Section Dependence Oxford Bulletin of Economics & Statistics, 2010, 72 (7), 567--599 (with CY Choi and Nelson C. Mark)

19   Panel Unit Root Tests under Cross Section Dependence with Recursive Mean Adjustment Economics Letters 2009, 105 (1). 123-126, Detail Critical values for CRMA tests (Excel File). Example Gauss Code

20   Economic Transition and Growth Journal of Applied Econometrics 2009, 24, 1153-1185 (with P.C.B. Phillips). Example Gauss Code , Stata Code written by Kerui Du

21   Endogenous Discounting, the World Savings Glut and the U.S. Current Account   Journal of International Economics, 2008, 30—53. (with Horag Choi and Nelson C. Mark)

22   Transition Modeling and Econometric Convergence Tests Econometrica, 2007, Vol 75, 1771-1855.  (with P.C.B. Phillips)  Power Point Slides by Sul, Gauss Code for Clustering Algorithm Data

23   Some Empirics on Economic Growth under Heterogeneous Technology  Journal of Macroeconomics, 2007, 455-469. (with P.C.B. Phillips)

24   Bias in Dynamic Panel Estimation with Fixed Effects, Incidental Trends and Cross Section Dependence Journal of Econometrics, 2007, Vol 137, 162-188 (with P.C.B. Phillips)

25   Unbiased Estimation of the Half-Life to PPP Convergence in Panel Data   Journal of Money, Credit, and Banking, 2006, 921-938. (with C.Y. Choi and N.C. Mark) Data, Gauss Code 

26   Prewhitening Bias in HAC Estimation Oxford Bulletin of Economics & Statistics, 2005, Vol 67, 517-546. (with P.C.B. Phillips and C.Y. Choi) Additional Monte Carlo Results  

27   Dynamic Seemingly Unrelated Cointegrating Regression (with N.C. Mark and M. Ogaki), Review of Economic Studies, 2005, 72, 797-820.  Gauss Code 

28   Dynamic Panel Estimation and Homogeneity Testing Under Cross Section Dependence  Econometrics Journal, 2003, Vol. 6. 217—260. (with P.C.B. Phillips) Gauss Code

29   Cointegration vector estimation by panel DOLS and long-run money demand  Oxford Bulletin of Economics & Statistics, 2003, Vol 65, 655-680. (with N.C. Mark) Gauss Code (Updated Aug 2010)

30   Spatial Market Efficiency and Policy Regime Change: Seemingly Unrelated Error Correction Model Estimation American Journal of Agricultural Economics, 2002, 84(4), 1042—1053. (with S.R. Thompson, M.T. Bohl)

31   Nominal Exchange Rates and Monetary Fundamentals: Evidence from a Seventeen Country Panel   Journal of International Economics, 2001, 53, 29-52 (with N.C. Mark) Data and Program (GAUSS code)

32   Excess Volatility of Realized Excess Profit from Currency Speculation in a Two-Country General Equilibrium Model    Review of International Economics, 1999, 7, 280-292.

33   Does Ex Post Uncovered Interest Differential Reflect on the Degrees of Capital Mobility?  Applied Economics Letters, 1999, 6, 97-102.