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The aim of this paper is to present a new estimation procedure that can be applied in many statistical frameworks including density and regression and which leads to both robust and optimal (or nearly optimal) estimators. In density…

统计理论 · 数学 2017-01-23 Yannick Baraud , Lucien Birgé , Mathieu Sart

When individuals engage in social or physical interactions, a unit's outcome may depend on the treatments received by others. In such interference environments, we provide a unified framework characterizing a broad class of spillover…

统计方法学 · 统计学 2025-12-16 Fei Fang , Laura Forastiere

In this article we study post-model selection estimators that apply ordinary least squares (OLS) to the model selected by first-step penalized estimators, typically Lasso. It is well known that Lasso can estimate the nonparametric…

统计理论 · 数学 2013-03-21 Alexandre Belloni , Victor Chernozhukov

For dimension reduction in $l_1$, the method of {\em Cauchy random projections} multiplies the original data matrix $\mathbf{A} \in\mathbb{R}^{n\times D}$ with a random matrix $\mathbf{R} \in \mathbb{R}^{D\times k}$ ($k\ll\min(n,D)$) whose…

数据结构与算法 · 计算机科学 2007-05-23 Ping Li , Trevor J. Hastie , Kenneth W. Church

We study the least square estimator, in the framework of simple linear regression, when the deviance term $\varepsilon$ with respect to the linear model is modeled by a uniform distribution. In particular, we give the law of this estimator,…

统计理论 · 数学 2021-11-09 M Jlibene , S Taoufik , S Benjelloun

Nonlinear regression analysis is a popular and important tool for scientists and engineers. In this article, we introduce theories and methods of nonlinear regression and its statistical inferences using the frequentist and Bayesian…

统计方法学 · 统计学 2024-02-09 Hsin-Hsiung Huang , Qing He

For estimating the large covariance matrix with a limited sample size, we propose the covariance model with general linear structure (CMGL) by employing the general link function to connect the covariance of the continuous response vector…

统计方法学 · 统计学 2022-05-17 Xinyan Fan , Wei Lan , Tao Zou , Chih-Ling Tsai

In this article we study the asymptotic behaviour of the least square estimator in a linear regression model based on random observation instances. We provide mild assumptions on the moments and dependence structure on the randomly spaced…

统计理论 · 数学 2021-10-07 Karine Bertin , Soledad Torres , Lauri Viitasaari

With the rapid advancements in technology for data collection, the application of the spatial autoregressive (SAR) model has become increasingly prevalent in real-world analysis, particularly when dealing with large datasets. However, the…

计量经济学 · 经济学 2025-05-05 Xuan Liang , Tao Zou

We propose a novel estimation approach for a general class of semi-parametric time series models where the conditional expectation is modeled through a parametric function. The proposed class of estimators is based on a Gaussian…

统计方法学 · 统计学 2025-07-21 Mirko Armillotta , Paolo Gorgi

In linear regression we wish to estimate the optimum linear least squares predictor for a distribution over $d$-dimensional input points and real-valued responses, based on a small sample. Under standard random design analysis, where the…

机器学习 · 统计学 2022-06-08 Michał Dereziński , Manfred K. Warmuth , Daniel Hsu

To conduct regression analysis for data contaminated with outliers, many approaches have been proposed for simultaneous outlier detection and robust regression, so is the approach proposed in this manuscript. This new approach is called…

统计方法学 · 统计学 2016-03-25 Xiaoli Gao , Yixin Fang

Scalar-on-function logistic regression, where the response is a binary outcome and the predictor consists of random curves, has become a general framework to explore a linear relationship between the binary outcome and functional predictor.…

统计方法学 · 统计学 2022-04-07 Muge Mutis , Ufuk Beyaztas , Gulhayat Golbasi Simsek , Han Lin Shang

Regression analysis is an important instrument to determine the effect of the explanatory variables on response variables. When outliers and bias errors are present, the standard weighted least squares estimator may perform poorly. For this…

统计计算 · 统计学 2025-02-11 Justo Puerto , Alberto Torrejon

Semi-functional linear regression models postulate a linear relationship between a scalar response and a functional covariate, and also include a non-parametric component involving a univariate explanatory variable. It is of practical…

统计方法学 · 统计学 2023-08-08 Graciela Boente , Matias Salibian-Barrera , Pablo Vena

Parameter estimation method of Jelinski-Moranda (JM) model based on weighted nonlinear least squares (WNLS) is proposed. The formulae of resolving the parameter WNLS estimation (WNLSE) are derived, and the empirical weight function and…

其他计算机科学 · 计算机科学 2019-08-17 Jingwei Liu , Yi Liu , Meizhi Xu

The non-Gaussian quasi maximum likelihood estimator is frequently used in GARCH models with intension to improve the efficiency of the GARCH parameters. However, unless the quasi-likelihood happens to be the true one, non-Gaussian QMLE…

统计方法学 · 统计学 2010-06-15 Lei Qi , Dacheng Xiu , Jianqing Fan

This paper establishes the almost sure convergence and asymptotic normality of levels and differenced quasi maximum-likelihood (QML) estimators of dynamic panel data models. The QML estimators are robust with respect to initial conditions,…

统计理论 · 数学 2017-02-03 Robert F. Phillips

High dimensional data reduction techniques are provided by using partial least squares within deep learning. Our framework provides a nonlinear extension of PLS together with a disciplined approach to feature selection and architecture…

统计方法学 · 统计学 2021-06-29 Nicholas Polson , Vadim Sokolov , Jianeng Xu

With a rapid increase in volume and complexity of data sets, there is a need for methods that can extract useful information, for example the relationship between two data sets measured for the same persons. The Partial Least Squares (PLS)…