no code implementations • 2 May 2024 • Weibin Mo, Weijing Tang, Songkai Xue, Yufeng Liu, Ji Zhu
Given the observed groups of data, we develop a min-max-regret (MMR) learning framework for general supervised learning, which targets to minimize the worst-group regret.
no code implementations • 8 Feb 2023 • Juncheng Dong, Weibin Mo, Zhengling Qi, Cong Shi, Ethan X. Fang, Vahid Tarokh
The objective is to use the offline dataset to find an optimal assortment.
no code implementations • 17 Oct 2021 • Weibin Mo, Zhengling Qi, Yufeng Liu
However, when the growth of testing sample size available for training is in a slower order, efficient value function estimates may not perform well anymore.
1 code implementation • 6 Sep 2021 • Weibin Mo, Yufeng Liu
Other than potential misspecified nuisance models, most existing methods do not account for the potential problem when the variance of outcome is heterogeneous among covariates and treatment.
no code implementations • 26 Jun 2020 • Weibin Mo, Zhengling Qi, Yufeng Liu
We propose a novel distributionally robust ITR (DR-ITR) framework that maximizes the worst-case value function across the values under a set of underlying distributions that are "close" to the training distribution.