4 papers
A New Lens on Homelessness: Daily Tent Monitoring with 311 Calls and Street Images
Wooyong Jung, Sola Kim, Dongwook Kim +2
Homelessness in the United States has surged to levels unseen since the Great Depression. However, existing methods for monitoring it, such as point-in-time (PIT) counts, have limi…
Point-Identifying Semiparametric Sample Selection Models with No Excluded Variable
Dongwoo Kim, Young Jun Lee
Sample selection is pervasive in applied economic studies. This paper proposes semiparametric selection models that achieve point identification without relying on exclusion restri…
Semi-nonparametric models of multidimensional matching: an optimal transport approach
Dongwoo Kim, Young Jun Lee
This paper develops a set of empirically tractable and flexible sieve estimators for semi-nonparametric multidimensional matching models with transferable utility, focusing on work…
Transfer Learning for Functional Mean Estimation: Phase Transition and Adaptive Algorithms
T. Tony Cai, Dongwoo Kim, Hongming Pu
This paper studies transfer learning for estimating the mean of random functions based on discretely sampled data, where, in addition to observations from the target distribution,…