no code implementations • 28 Feb 2024 • Yiyan Huang, Cheuk Hang Leung, Siyi Wang, Yijun Li, Qi Wu
The growing demand for personalized decision-making has led to a surge of interest in estimating the Conditional Average Treatment Effect (CATE).
no code implementations • 2 Jan 2024 • Xixu Hu, Runkai Zheng, Jindong Wang, Cheuk Hang Leung, Qi Wu, Xing Xie
In this study, we address this gap by introducing SpecFormer, specifically designed to enhance ViTs' resilience against adversarial attacks, with support from carefully derived theoretical guarantees.
1 code implementation • 16 Dec 2023 • Yijun Li, Cheuk Hang Leung, Xiangqian Sun, Chaoqun Wang, Yiyan Huang, Xing Yan, Qi Wu, Dongdong Wang, Zhixiang Huang
Consumer credit services offered by e-commerce platforms provide customers with convenient loan access during shopping and have the potential to stimulate sales.
1 code implementation • 15 Jun 2023 • Yijun Li, Cheuk Hang Leung, Qi Wu
Multivariate sequential data collected in practice often exhibit temporal irregularities, including nonuniform time intervals and component misalignment.
1 code implementation • 31 May 2023 • Shumin Ma, Zhiri Yuan, Qi Wu, Yiyan Huang, Xixu Hu, Cheuk Hang Leung, Dongdong Wang, Zhixiang Huang
This paper proposes a new domain adaptation approach in which one can measure the differences in the internal dependence structure separately from those in the marginals.
no code implementations • 5 Sep 2022 • Yiyan Huang, Cheuk Hang Leung, Xing Yan, Qi Wu, Shumin Ma, Zhiri Yuan, Dongdong Wang, Zhixiang Huang
Theoretically, the RCL estimators i) are as consistent and doubly robust as the DML estimators, and ii) can get rid of the error-compounding issue.
no code implementations • 5 Sep 2022 • Yiyan Huang, Cheuk Hang Leung, Shumin Ma, Qi Wu, Dongdong Wang, Zhixiang Huang
In this paper, we propose a moderately-balanced representation learning (MBRL) framework based on recent covariates balanced representation learning methods and orthogonal machine learning theory.
no code implementations • 22 Mar 2021 • Yiyan Huang, Cheuk Hang Leung, Qi Wu, Xing Yan
Theoretically, the RCL estimators i) satisfy the (higher-order) orthogonal condition and are as \textit{consistent and doubly robust} as the DML estimators, and ii) get rid of the error-compounding issue.
no code implementations • 17 Dec 2020 • Yiyan Huang, Cheuk Hang Leung, Xing Yan, Qi Wu, Nanbo Peng, Dongdong Wang, Zhixiang Huang
Classical estimators overlook the confounding effects and hence the estimation error can be magnificent.
no code implementations • 3 Jun 2019 • Qi Wu, Shumin Ma, Cheuk Hang Leung, Wei Liu, Nanbo Peng
Without the boundedness constraint, the CCO problem is shown to perform uniformly better than the DRO problem, irrespective of the radius of the ambiguity set, the choice of the divergence measure, or the tail heaviness of the center distribution.