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Adaptive random search approaches have been shown to be effective for global optimization problems, where under certain conditions, the expected performance time increases only linearly with dimension. However, previous analyses assume that…

最优化与控制 · 数学 2022-03-22 David D. Linz , Zelda B. Zabinsky

In the context of high-dimensional linear regression models, we propose an algorithm of exact support recovery in the setting of noisy compressed sensing where all entries of the design matrix are independent and identically distributed…

统计理论 · 数学 2019-10-23 Mohamed Ndaoud , Alexandre B. Tsybakov

Recent text-based causal methods attempt to mitigate confounding bias by estimating proxies of confounding variables that are partially or imperfectly measured from unstructured text data. These approaches, however, assume analysts have…

计算与语言 · 计算机科学 2024-10-30 Jacob M. Chen , Rohit Bhattacharya , Katherine A. Keith

The presence of outlying observations may adversely affect statistical testing procedures that result in unstable test statistics and unreliable inferences depending on the distortion in parameter estimates. In spite of the fact that the…

统计方法学 · 统计学 2021-04-19 Beste Hamiye Beyaztas , Soutir Bandyopadhyay , Abhijit Mandal

Instrumental variables (IV) regression is widely used to estimate causal treatment effects in settings where receipt of treatment is not fully random, but there exists an instrument that generates exogenous variation in treatment exposure.…

计量经济学 · 经济学 2021-08-10 Stephen Coussens , Jann Spiess

Estimating the individual treatment effect (ITE) from observational data is essential in medicine. A central challenge in estimating the ITE is handling confounders, which are factors that affect both an intervention and its outcome. Most…

机器学习 · 计算机科学 2018-11-28 Changhee Lee , Nicholas Mastronarde , Mihaela van der Schaar

We propose a framework using contrastive learning as a pre-training task to perform image classification in the presence of noisy labels. Recent strategies such as pseudo-labeling, sample selection with Gaussian Mixture models, weighted…

计算机视觉与模式识别 · 计算机科学 2021-04-21 Madalina Ciortan , Romain Dupuis , Thomas Peel

We address measurement error bias in propensity score (PS) analysis due to covariates that are latent variables. In the setting where latent covariate $X$ is measured via multiple error-prone items $\mathbf{W}$, PS analysis using several…

统计方法学 · 统计学 2020-02-13 Trang Quynh Nguyen , Elizabeth A. Stuart

We introduce a new approach for comparing the predictive accuracy of two nested models that bypasses the difficulties caused by the degeneracy of the asymptotic variance of forecast error loss differentials used in the construction of…

计量经济学 · 经济学 2023-10-17 Jean-Yves Pitarakis

The model-X conditional randomization test is a generic framework for conditional independence testing, unlocking new possibilities to discover features that are conditionally associated with a response of interest while controlling type-I…

机器学习 · 计算机科学 2023-02-21 Shalev Shaer , Yaniv Romano

We model and study the problem of localizing a set of sparse forcing inputs for linear dynamical systems from noisy measurements when the initial state is unknown. This problem is of particular relevance to detecting forced oscillations in…

最优化与控制 · 数学 2022-01-21 Rajasekhar Anguluri , Lalitha Sankar , Oliver Kosut

Predictive recursion (PR) is a fast algorithm for nonparametric estimation of a mixing density, with connections to sequential Bayesian updating under a Dirichlet process prior and rigorous frequentist consistency guarantees. Extending PR…

统计方法学 · 统计学 2026-05-05 Jonathan Lin , Surya Tokdar

There is an emerging trend to leverage noisy image datasets in many visual recognition tasks. However, the label noise among the datasets severely degenerates the \mbox{performance of deep} learning approaches. Recently, one mainstream is…

计算机视觉与模式识别 · 计算机科学 2017-11-03 Jiangchao Yao , Jiajie Wang , Ivor Tsang , Ya Zhang , Jun Sun , Chengqi Zhang , Rui Zhang

The problem of estimating an unknown phase $ \varphi $ using two-level probes in the presence of unital phase-covariant noise and using finite resources is investigated. We introduce a simple model in which the phase-imprinting operation on…

量子物理 · 物理学 2016-10-05 Rosanna Nichols , Thomas R. Bromley , Luis A. Correa , Gerardo Adesso

This paper is concerned with inference on the regression function of a high-dimensional linear model when outcomes are missing at random. We propose an estimator which combines a Lasso pilot estimate of the regression function with a bias…

统计方法学 · 统计学 2024-12-11 Yikun Zhang , Alexander Giessing , Yen-Chi Chen

Any classifier can be "smoothed out" under Gaussian noise to build a new classifier that is provably robust to $\ell_2$-adversarial perturbations, viz., by averaging its predictions over the noise via randomized smoothing. Under the…

机器学习 · 计算机科学 2022-12-21 Jongheon Jeong , Seojin Kim , Jinwoo Shin

While achieving high prediction accuracy is a fundamental goal in machine learning, an equally important task is finding a small number of features with high explanatory power. One popular selection technique is permutation importance,…

机器学习 · 统计学 2024-10-02 Min Lu , Hemant Ishwaran

We study the problem of recovering the latent ground truth labeling of a structured instance with categorical random variables in the presence of noisy observations. We present a new approximate algorithm for graphs with categorical…

机器学习 · 计算机科学 2019-07-09 Alireza Heidari , Ihab F. Ilyas , Theodoros Rekatsinas

Empirical investigations into unintended model behavior often show that the algorithm is predicting another outcome than what was intended. These exposes highlight the need to identify when algorithms predict unintended quantities - ideally…

统计方法学 · 统计学 2026-01-27 Amanda Coston

Many industrial applications use Metric Learning as a way to circumvent scalability issues when designing systems with a high number of classes. Because of this, this field of research is attracting a lot of interest from the academic and…

计算机视觉与模式识别 · 计算机科学 2020-06-11 Carlos Roig , David Varas , Issey Masuda , Juan Carlos Riveiro , Elisenda Bou-Balust