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Sokbae Lee

4 accepted papers

2025

Prediction Risk and Estimation Risk of the Ridgeless Least Squares Estimator under General Assumptions on Regression Errors

ICLR 2025poster

In recent years, there has been a significant growth in research focusing on minimum $\ell_2$ norm (ridgeless) interpolation least squares estimators. However, the majority of these analyses have been limited to an unrealistic regression error structure, assuming independent and identically distribu…

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2023

Average Adjusted Association: Efficient Estimation with High Dimensional Confounders

AISTATS 2023poster

The log odds ratio is a well-established metric for evaluating the association between binary outcome and exposure variables. Despite its widespread use, there has been limited discussion on how to summarize the log odds ratio as a function of confounders through averaging. To address this issue, we…

2022

Fast and Robust Online Inference with Stochastic Gradient Descent via Random Scaling

AAAI 2022technical

We develop a new method of online inference for a vector of parameters estimated by the Polyak-Ruppert averaging procedure of stochastic gradient descent (SGD) algorithms. We leverage insights from time series regression in econometrics and construct asymptotically pivotal statistics via random scal…

Cited by 41Source ↗PDF ↗Scholar ↗