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We propose a principal components regression method based on maximizing a joint pseudo-likelihood for responses and predictors. Our method uses both responses and predictors to select linear combinations of the predictors relevant for the…

统计方法学 · 统计学 2021-08-10 Karl Oskar Ekvall

Accurately backpropagating the gradient through categorical variables is a challenging task that arises in various domains, such as training discrete latent variable models. To this end, we propose CARMS, an unbiased estimator for…

机器学习 · 计算机科学 2021-10-28 Alek Dimitriev , Mingyuan Zhou

For robust statistical inference it is crucial to obtain a good estimator of the variance of the proposed estimator of the statistical estimand. A commonly used estimator of the variance for an asymptotically linear estimator is the sample…

统计方法学 · 统计学 2025-05-19 Yunwen Ji , Mark van der Laan , Alan Hubbard

We consider a finite mixture model with varying mixing probabilities. Linear regression models are assumed for observed variables with coefficients depending on the mixture component the observed subject belongs to. A modification of the…

概率论 · 数学 2016-01-07 Daryna Liubashenko , Rostyslav Maiboroda

We establish the asymptotic normality of the regression estimator in a fixed-design setting when the errors are given by a field of dependent random variables. The result applies to martingale-difference or strongly mixing random fields. On…

统计理论 · 数学 2009-07-10 Mohamed El Machkouri , Radu Stoica

We suggest a new method, called Functional Additive Regression, or FAR, for efficiently performing high-dimensional functional regression. FAR extends the usual linear regression model involving a functional predictor, $X(t)$, and a scalar…

统计理论 · 数学 2015-10-15 Yingying Fan , Gareth M. James , Peter Radchenko

It is known that the estimating equations for quantile regression (QR) can be solved using an EM algorithm in which the M-step is computed via weighted least squares, with weights computed at the E-step as the expectation of independent…

统计方法学 · 统计学 2021-08-26 Haim Bar , James Booth , Martin T. Wells

We study linear quantile regression models when regressors and/or dependent variable are not directly observed but estimated in an initial first step and used in the second step quantile regression for estimating the quantile parameters.…

计量经济学 · 经济学 2020-12-29 Jayeeta Bhattacharya

This paper considers the problem of kernel regression and classification with possibly unobservable response variables in the data, where the mechanism that causes the absence of information is unknown and can depend on both predictors and…

统计理论 · 数学 2022-12-07 Majid Mojirsheibani , William Pouliot , Andre Shakhbandaryan

While seasonality inherent to raw macroeconomic data is commonly removed by seasonal adjustment techniques before it is used for structural inference, this may distort valuable information in the data. As an alternative method to commonly…

计量经济学 · 经济学 2025-08-12 Daniel Dzikowski , Carsten Jentsch

As a growing number of problems involve variables that are random objects, the development of models for such data has become increasingly important. This paper introduces a novel varying-coefficient Fr\'echet regression model that extends…

统计方法学 · 统计学 2025-09-16 Yanzhao Wang , Jianqiang Zhang , Wangli Xu

Regression quantiles have asymptotic variances that depend on the conditional densities of the response variable given regressors. This paper develops a new estimate of the asymptotic variance of regression quantiles that leads any…

计量经济学 · 经济学 2019-09-27 Juan Carlos Escanciano , Chuan Goh

In this article, a copula-based method for mixed regression models is proposed, where the conditional distribution of the response variable, given covariates, is modelled by a parametric family of continuous or discrete distributions, and…

统计方法学 · 统计学 2025-01-13 Pavel Krupskii , Bouchra R Nasri , Bruno N Remillard

Confounding bias, missing data, and selection bias are three common obstacles to valid causal inference in the data sciences. Covariate adjustment is the most pervasive technique for recovering casual effects from confounding bias. In this…

机器学习 · 计算机科学 2019-09-17 Mojdeh Saadati , Jin Tian

In clinical trials, a covariate-adjusted response-adaptive (CARA) design allows a subject newly entering a trial a better chance of being allocated to a superior treatment regimen based on cumulative information from previous subjects, and…

应用统计 · 统计学 2011-06-21 Yuan-chin Ivan Chang , Eunsik Park

In the context of the usual calibration model, we consider the case in which the independent variable is unobservable, but a pre-fixed value on its surrogate is available. Thus, considering controlled variables and assuming that the…

应用统计 · 统计学 2008-02-06 Betsabé G. Blas Achic , Mônica C. Sandoval , Olga Satomi Yoshida

One of the most fundamental problems in causal inference is the estimation of a causal effect when variables are confounded. This is difficult in an observational study, because one has no direct evidence that all confounders have been…

机器学习 · 统计学 2014-11-03 Ricardo Silva , Robin Evans

We analyze the statistical properties of nonparametric regression estimators using covariates which are not directly observable, but have be estimated from data in a preliminary step. These so-called generated covariates appear in numerous…

统计理论 · 数学 2012-07-25 Enno Mammen , Christoph Rothe , Melanie Schienle

Inference for the parameters indexing generalised linear models is routinely based on the assumption that the model is correct and a priori specified. This is unsatisfactory because the chosen model is usually the result of a data-adaptive…

统计方法学 · 统计学 2020-06-16 Stijn Vansteelandt , Oliver Dukes

This paper introduces a new type of regression methodology named as Convex-Area-Wise Linear Regression(CALR), which separates given datasets by disjoint convex areas and fits different linear regression models for different areas. This…

数据库 · 计算机科学 2024-06-11 Bohan Lyu , Jianzhong Li