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The problem of testing changes in covariance has received increasing attention in recent years, especially in the context of high-dimensional testing. A number of approaches have been proposed, all limited to the two-sample problem and…

统计方法学 · 统计学 2016-09-06 Yi-Hui Zhou

Testing the equality in distributions of multiple samples is a common task in many fields. However, this problem for high-dimensional or non-Euclidean data has not been well explored. In this paper, we propose new nonparametric tests based…

统计方法学 · 统计学 2022-05-30 Hoseung Song , Hao Chen

We endeavour to estimate numerous multi-dimensional means of various probability distributions on a common space based on independent samples. Our approach involves forming estimators through convex combinations of empirical means derived…

机器学习 · 统计学 2025-03-11 Gilles Blanchard , Jean-Baptiste Fermanian , Hannah Marienwald

We propose a projection-based class of uniformity tests on the hypersphere using statistics that integrate, along all possible directions, the weighted quadratic discrepancy between the empirical cumulative distribution function of the…

统计方法学 · 统计学 2020-09-22 Eduardo García-Portugués , Paula Navarro-Esteban , Juan A. Cuesta-Albertos

A number of biomedical problems require performing many hypothesis tests, with an attendant need to apply stringent thresholds. Often the data take the form of a series of predictor vectors, each of which must be compared with a single…

统计方法学 · 统计学 2014-05-13 Yi-Hui Zhou , Fred Wright

Testing cross-sectional independence in panel data models is of fundamental importance in econometric analysis with high-dimensional panels. Recently, econometricians began to turn their attention to the problem in the presence of serial…

统计方法学 · 统计学 2023-09-18 Hongfei Wang , Binghui Liu , Long Feng , Yanyuan Ma

It is a common saying that testing for conditional independence, i.e., testing whether whether two random vectors $X$ and $Y$ are independent, given $Z$, is a hard statistical problem if $Z$ is a continuous random variable (or vector). In…

统计理论 · 数学 2022-03-25 Rajen D. Shah , Jonas Peters

The likelihood ratio statistic, with its asymptotic $\chi^2$ distribution at regular model points, is often used for hypothesis testing. At model singularities and boundaries, however, the asymptotic distribution may not be $\chi^2$, as…

统计理论 · 数学 2018-06-25 Jonathan D. Mitchell , Elizabeth S. Allman , John A. Rhodes

With multiple outcomes in empirical research, a common strategy is to define a composite outcome as a weighted average of the original outcomes. However, the choices of weights are often subjective and can be controversial. We propose an…

统计方法学 · 统计学 2025-09-17 Wei Zhang , Qizhai Li , Peng Ding

In this paper, we develop a non-asymptotic local normal approximation for multinomial probabilities. First, we use it to find non-asymptotic total variation bounds between the measures induced by uniformly jittered multinomials and the…

统计理论 · 数学 2023-09-06 Eric Bax , Frédéric Ouimet

We study hypothesis testing for penalized estimators in settings where the full marginal distribution of a multivariate response is difficult to specify, such as longitudinal data with correlated measurements or high-dimensional…

统计方法学 · 统计学 2026-04-08 Jing Zhou , Zhe Zhang

Inferential challenges that arise when data are censored have been extensively studied under the classical frameworks. In this paper, we provide an alternative generalized inferential model approach whose output is a data-dependent…

统计方法学 · 统计学 2021-11-16 Joyce Cahoon , Ryan Martin

A causal structure is a description of the functional dependencies between random variables. A distribution is compatible with a given causal structure if it can be realized by a process respecting these dependencies. Deciding whether a…

量子物理 · 物理学 2024-03-25 Laurens T. Ligthart , Mariami Gachechiladze , David Gross

Since the celebrated works of Russo and Zou (2016,2019) and Xu and Raginsky (2017), it has been well known that the generalization error of supervised learning algorithms can be bounded in terms of the mutual information between their input…

机器学习 · 统计学 2022-07-20 Gábor Lugosi , Gergely Neu

We consider the problem of large-scale inference on the row or column variables of data in the form of a matrix. Often this data is transposable, meaning that both the row variables and column variables are of potential interest. An example…

统计方法学 · 统计学 2015-03-13 Genevera I. Allen , Robert Tibshirani

Non-probabilistic convex model utilizes a convex set to quantify the uncertainty domain of uncertain-but-bounded parameters, which is very effective for structural uncertainty analysis with limited or poor-quality experimental data. To…

其他统计学 · 统计学 2018-01-18 Ni Bingyu , Jiang Chao , Huang Zhiliang

We generalize the strategy presented in Refs. [1, 2], and propose general conditions for a measure of total correlations to be an entanglement monotone using its pure (and mixed) convex-roof extension. In so doing, we derive crucial…

量子物理 · 物理学 2010-09-07 Gerardo A. Paz-Silva , John H. Reina

The paper presents exponentially-strong converses for source-coding, channel coding, and hypothesis testing problems. More specifically, it presents alternative proofs for the well-known exponentially-strong converse bounds for almost…

信息论 · 计算机科学 2023-01-18 Mustapha Hamad , Michele Wigger , Mireille Sarkiss

We are interested in testing general linear hypotheses in a high-dimensional multivariate linear regression model. The framework includes many well-studied problems such as two-sample tests for equality of population means, MANOVA and…

统计方法学 · 统计学 2018-10-05 Haoran Li , Alexander Aue , Debashis Paul

This paper considers inference for conditional moment inequality models using a multiscale statistic. We derive the asymptotic distribution of this test statistic and use the result to propose feasible critical values that have a simple…

应用统计 · 统计学 2015-12-10 Timothy B. Armstrong , Hock Peng Chan