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Modeling data with non-stationary covariance structure is important to represent heterogeneity in geophysical and other environmental spatial processes. In this work, we investigate a multistage approach to modeling non-stationary…

统计方法学 · 统计学 2020-02-05 Ashton Wiens , Douglas Nychka , William Kleibe

For supervised classification problems, this paper considers estimating the query's label probability through local regression using observed covariates. Well-known nonparametric kernel smoother and $k$-nearest neighbor ($k$-NN) estimator,…

机器学习 · 统计学 2022-07-25 Ruixing Cao , Akifumi Okuno , Kei Nakagawa , Hidetoshi Shimodaira

Many mathematical imaging problems are posed as non-convex optimization problems. When numerically tractable global optimization procedures are not available, one is often interested in testing ex post facto whether or not a locally…

信号处理 · 电气工程与系统科学 2020-07-13 Joel W. LeBlanc , Brian J. Thelen , Alfred O. Hero

In this paper we propose a semiparametric spatial autoregressive model that combines a linear covariate component with a nonparametrically estimated spatial term, allowing flexible dependence modeling without restrictive covariance…

统计方法学 · 统计学 2026-04-30 Rodrigo García Arancibia , Pamela Llop , Mariel Lovatto

In survey sampling, survey data do not necessarily represent the target population, and the samples are often biased. However, information on the survey weights aids in the elimination of selection bias. The Horvitz-Thompson estimator is a…

统计方法学 · 统计学 2024-04-05 Kosuke Morikawa , Yoshikazu Terada , Jae Kwang Kim

Given two parties performing experiments in separate laboratories, we provide a diagrammatic formulation of what it means for the joint statistics of their experiments to satisfy local realism. In particular, we show that the principles of…

量子物理 · 物理学 2025-02-28 James Fullwood

This paper develops a novel methodology for testing the goodness-of-fit of sparse parametric regression models based on projected empirical processes and p-value combination, where the covariate dimension may substantially exceed the sample…

统计理论 · 数学 2026-01-05 Falong Tan , Shan Tang , Lixing Zhu

Randomization testing is a fundamental method in statistics, enabling inferential tasks such as testing for (conditional) independence of random variables, constructing confidence intervals in semiparametric location models, and…

统计方法学 · 统计学 2023-03-21 Yash Nair , Lucas Janson

The statistical matching problem is a data integration problem with structured missing data. The general form involves the analysis of multiple datasets that only have a strict subset of variables jointly observed across all datasets. The…

统计方法学 · 统计学 2019-04-01 Daniel Ahfock , Saumyadipta Pyne , Geoffrey J. McLachlan

Relativity theory severely restricts the ability to perform nonlocal measurements in quantum mechanics. Studying such nonlocal schemes may thus reveal insights regarding the relations between these two fundamental theories. Therefore, for…

Nonparametric and nonlinear measures of statistical dependence between pairs of random variables are important tools in modern data analysis. In particular the emergence of large data sets can now support the relaxation of linearity…

统计方法学 · 统计学 2016-05-13 Sarah Filippi , Chris Holmes

We study concentration in spectral norm of nonparametric estimates of correlation matrices. We work within the confine of a Gaussian copula model. Two nonparametric estimators of the correlation matrix, the sine transformations of the…

统计理论 · 数学 2014-03-26 Ritwik Mitra , Cun-Hui Zhang

This paper examines the problem of nonparametric testing for the no-effect of a random covariate (or predictor) on a functional response. This means testing whether the conditional expectation of the response given the covariate is almost…

统计理论 · 数学 2014-11-25 Valentin Patilea , Cesar Sanchez-Sellero , Matthieu Saumard

Permutation tests are a powerful and flexible approach to inference via resampling. As computational methods become more ubiquitous in the statistics curriculum, use of permutation tests has become more tractable. At the heart of the…

统计方法学 · 统计学 2025-06-09 Johanna Hardin , Lauren Quesada , Julie Ye , Nicholas J. Horton

The conditional independence assumption has recently appeared in a growing body of literature on the estimation of multivariate mixtures. We consider here conditionally independent multivariate mixtures of power series distributions with…

统计理论 · 数学 2025-09-09 Fadoua Balabdaoui , Harald Besdziek , Yong Wang

We propose a general method for constructing confidence intervals and statistical tests for single or low-dimensional components of a large parameter vector in a high-dimensional model. It can be easily adjusted for multiplicity taking…

统计理论 · 数学 2014-06-24 Sara van de Geer , Peter Bühlmann , Ya'acov Ritov , Ruben Dezeure

Two-sample tests for multivariate data and non-Euclidean data are widely used in many fields. Parametric tests are mostly restrained to certain types of data that meets the assumptions of the parametric models. In this paper, we study a…

统计方法学 · 统计学 2018-05-01 Hao Chen , Xu Chen , Yi Su

The most widely used task fMRI analyses use parametric methods that depend on a variety of assumptions. While individual aspects of these fMRI models have been evaluated, they have not been evaluated in a comprehensive manner with empirical…

应用统计 · 统计学 2016-07-14 Anders Eklund , Thomas Nichols , Hans Knutsson

The fact that quantum mechanics predicts stronger correlations than classical physics is an essential cornerstone of quantum information processing. Indeed, these quantum correlations are a valuable resource for various tasks, such as…

In this paper, we introduce a flexible and widely applicable nonparametric entropy-based testing procedure that can be used to assess the validity of simple hypotheses about a specific parametric population distribution. The testing…

计量经济学 · 经济学 2022-01-19 Ron Mittelhammer , George Judge , Miguel Henry
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