International Fellows
Sokbae (Simon) Lee
Columbia University and IFS
Selected Publications
We set up an econometric model of persuasion and study identification of key parameters under various […]
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Using the Reinhart–Rogoff dataset, we find a debt threshold not around 90 per cent but around […]
This paper examines the trends in geographic localization of knowledge spillovers via patent citations, considering US […]
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In this article, we propose a general method for testing inequality restrictions on nonparametric functions. Our […]
We consider a variable selection problem for the prediction of binary outcomes. We study the best […]
This paper studies inference of preference parameters in semiparametric discrete choice models when these parameters are […]
We show that the generalized method of moments (GMM) estimation problem in instrumental variable quantile regression […]
In a randomized control trial, the precision of an average treatment effect estimator and the power […]
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Economic theory often provides shape restrictions on functions of interest in applications, such as monotonicity, convexity, […]
In this paper, we consider a high-dimensional quantile regression model where the sparsity structure may differ […]