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Assigning relevance scores to the input features of a machine learning model enables to measure the contributions of the features in achieving a correct outcome. It is regarded as one of the approaches towards developing explainable models.…

信号处理 · 电气工程与系统科学 2026-03-24 Yalemzerf Getnet , Abiy Tasissa , Waltenegus Dargie

Recent literature provides many computational and modeling approaches for covariance matrices estimation in a penalized Gaussian graphical models but relatively little study has been carried out on the choice of the tuning parameter. This…

统计方法学 · 统计学 2009-09-08 Heng Lian

We present vir, an R package for variational inference with shrinkage priors. Our package implements variational and stochastic variational algorithms for linear and probit regression models, the use of which is a common first step in many…

统计计算 · 统计学 2021-02-18 Suchit Mehrotra , Arnab Maity

The central subspace of a pair of random variables $(y,x) \in \mathbb{R}^{p+1}$ is the minimal subspace $\mathcal{S}$ such that $y \perp \hspace{-2mm} \perp x\mid P_{\mathcal{S}}x$. In this paper, we consider the minimax rate of estimating…

统计理论 · 数学 2017-01-25 Qian Lin , Xinran Li , Dongming Huang , Jun S. Liu

As datasets grow larger, they are often distributed across multiple machines that compute in parallel and communicate with a central machine through short messages. In this paper, we focus on sparse regression and propose a new procedure…

统计方法学 · 统计学 2023-03-14 Sifan Liu , Snigdha Panigrahi

We propose and implement an approach to inference in linear instrumental variables models which is simultaneously robust and computationally tractable. Inference is based on self-normalization of sample moment conditions, and allows for…

计量经济学 · 经济学 2022-11-29 Eric Gautier , Christiern Rose

We propose a simple and efficient approach to generate a prediction intervals (PI) for approximated and forecasted trends. Our method leverages a weighted asymmetric loss function to estimate the lower and upper bounds of the PI, with the…

机器学习 · 统计学 2023-07-20 Milo Grillo , Yunpeng Han , Agnieszka Werpachowska

This article describes a multivariate polynomial regression method where the uncertainty of the input parameters are approximated with Gaussian distributions, derived from the central limit theorem for large weighted sums, directly from the…

机器学习 · 统计学 2013-10-04 Peter Kovesarki , Ian C. Brock

A new bandwidth selection rule that uses different bandwidths for the local linear regression estimators on the left and the right of the cut-off point is proposed for the sharp regression discontinuity estimator of the mean program impact…

统计方法学 · 统计学 2015-08-10 Yoichi Arai , Hidehiko Ichimura

Negative binomial regression is commonly employed to analyze overdispersed count data. With small to moderate sample sizes, the maximum likelihood estimator of the dispersion parameter may be subject to a significant bias, that in turn…

统计方法学 · 统计学 2020-11-06 Euloge Clovis Kenne Pagui , Alessandra Salvan , Nicola Sartori

We address high dimensional covariance estimation for elliptical distributed samples, which are also known as spherically invariant random vectors (SIRV) or compound-Gaussian processes. Specifically we consider shrinkage methods that are…

统计方法学 · 统计学 2015-05-20 Yilun Chen , Ami Wiesel , Alfred O. Hero

Most estimates for penalised linear regression can be viewed as posterior modes for an appropriate choice of prior distribution. Bayesian shrinkage methods, particularly the horseshoe estimator, have recently attracted a great deal of…

统计方法学 · 统计学 2017-11-06 Zemei Xu , Daniel F. Schmidt , Enes Makalic , Guoqi Qian , John L. Hopper

Application of the minimum distance method to the linear regression model for estimating regression parameters is a difficult and time-consuming process due to the complexity of its distance function, and hence, it is computationally…

统计计算 · 统计学 2017-02-15 Jiwoong Kim

Accurately modeling the friction torque in robotic joints has long been challenging due to the request for a robust mathematical description. Traditional model-based approaches are often labor-intensive, requiring extensive experiments and…

Researchers often use linear regression to analyse randomized experiments to improve treatment effect estimation by adjusting for imbalances of covariates in the treatment and control groups. Our work offers a randomization-based inference…

统计理论 · 数学 2022-07-08 Hanzhong Liu , Yuehan Yang

In this paper we present a linear regression model for modal symbolic data. The observed variables are histogram variables according to the definition given in the framework of Symbolic Data Analysis and the parameters of the model are…

统计方法学 · 统计学 2016-05-03 Antonio Irpino , Rosanna Verde

Recently, authors have studied weighted version of Kerridge inaccuracy measure for truncated distributions. In the present communication we introduce the notion of weighted interval inaccuracy measure for two-sided truncated random…

统计理论 · 数学 2020-04-08 Chanchal Kundu

In existing deep learning methods, almost all loss functions assume that sample data values used to be predicted are the only correct ones. This assumption does not hold for laboratory test data. Test results are often within tolerable or…

机器学习 · 计算机科学 2021-07-09 Mei Wang , Jianwen Su , Zhihua Lin

Confidence sets play a fundamental role in statistical inference. In this paper, we consider confidence intervals for high dimensional linear regression with random design. We first establish the convergence rates of the minimax expected…

统计理论 · 数学 2015-11-30 T. Tony Cai , Zijian Guo

Symbolic regression (SR) is a powerful technique for discovering the analytical mathematical expression from data, finding various applications in natural sciences due to its good interpretability of results. However, existing methods face…

机器学习 · 计算机科学 2024-07-11 Xieting Chu , Hongjue Zhao , Enze Xu , Hairong Qi , Minghan Chen , Huajie Shao