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Robust low-rank approximation under row-wise adversarial corruption can be achieved with a single pass, randomized procedure that detects and removes outlier rows by thresholding their projected norms. We propose a scalable, non-iterative…

机器学习 · 计算机科学 2025-04-04 Aidan Tiruvan

We propose new inference tools for forward stepwise regression, least angle regression, and the lasso. Assuming a Gaussian model for the observation vector y, we first describe a general scheme to perform valid inference after any selection…

统计方法学 · 统计学 2015-10-13 Ryan J. Tibshirani , Jonathan Taylor , Richard Lockhart , Robert Tibshirani

In logistic regression, it is often desirable to utilize regularization to promote sparse solutions, particularly for problems with a large number of features compared to available labels. In this paper, we present screening rules that…

机器学习 · 统计学 2022-02-02 Anna Deza , Alper Atamturk

The Lasso (Least Absolute Shrinkage and Selection Operator) has been a popular technique for simultaneous linear regression estimation and variable selection. In this paper, we propose a new novel approach for robust Lasso that follows the…

统计方法学 · 统计学 2016-05-13 Esa Ollila

We propose a shrinkage procedure for simultaneous variable selection and estimation in generalized linear models (GLMs) with an explicit predictive motivation. The procedure estimates the coefficients by minimizing the Kullback-Leibler…

统计方法学 · 统计学 2010-09-14 Minh-Ngoc Tran , David Nott , Chenlei Leng

Medical imaging involves high-dimensional data, yet their acquisition is obtained for limited samples. Multivariate predictive models have become popular in the last decades to fit some external variables from imaging data, and standard…

应用统计 · 统计学 2018-06-18 Jérôme-Alexis Chevalier , Joseph Salmon , Bertrand Thirion

It is common to show the confidence intervals or $p$-values of selected features, or predictor variables in regression, but they often involve selection bias. The selective inference approach solves this bias by conditioning on the…

统计方法学 · 统计学 2022-06-02 Yoshikazu Terada , Hidetoshi Shimodaira

We present a novel adaptive random subspace learning algorithm (RSSL) for prediction purpose. This new framework is flexible where it can be adapted with any learning technique. In this paper, we tested the algorithm for regression and…

机器学习 · 计算机科学 2015-02-10 Mohamed Elshrif , Ernest Fokoue

Rating-based collaborative filtering is the process of predicting how a user would rate a given item from other user ratings. We propose three related slope one schemes with predictors of the form f(x) = x + b, which precompute the average…

数据库 · 计算机科学 2018-10-16 Daniel Lemire , Anna Maclachlan

Neural models for NLP typically use large numbers of parameters to reach state-of-the-art performance, which can lead to excessive memory usage and increased runtime. We present a structure learning method for learning sparse,…

计算与语言 · 计算机科学 2019-09-09 Jesse Dodge , Roy Schwartz , Hao Peng , Noah A. Smith

This paper is concerned with detecting the presence of out of sample predictability in linear predictive regressions with a potentially large set of candidate predictors. We propose a procedure based on out of sample MSE comparisons that is…

计量经济学 · 经济学 2023-10-17 Jesus Gonzalo , Jean-Yves Pitarakis

For high-dimensional sparse parameter estimation problems, Log-Sum Penalty (LSP) regularization effectively reduces the sampling sizes in practice. However, it still lacks theoretical analysis to support the experience from previous…

信息论 · 计算机科学 2014-02-25 Zheng Pan , Guangdong Hou , Changshui Zhang

Given $n$ noisy samples with $p$ dimensions, where $n \ll p$, we show that the multi-step thresholding procedure based on the Lasso -- we call it the {\it Thresholded Lasso}, can accurately estimate a sparse vector $\beta \in \R^p$ in a…

统计理论 · 数学 2010-02-11 Shuheng Zhou

Recently, considerable interest has focused on variable selection methods in regression situations where the number of predictors, $p$, is large relative to the number of observations, $n$. Two commonly applied variable selection approaches…

应用统计 · 统计学 2011-04-19 Peter Radchenko , Gareth M. James

This article introduces a subbagging (subsample aggregating) approach for variable selection in regression within the context of big data. The proposed subbagging approach not only ensures that variable selection is scalable given the…

统计方法学 · 统计学 2025-03-10 Xian Li , Xuan Liang , Tao Zou

Linear regression is arguably the most prominent among statistical inference methods, popular both for its simplicity as well as its broad applicability. On par with data-intensive applications, the sheer size of linear regression problems…

应用统计 · 统计学 2016-06-29 Dimitris Berberidis , Vassilis Kekatos , Georgios B. Giannakis

This paper proposes a reliable neural network pruning algorithm by setting up a scientific control. Existing pruning methods have developed various hypotheses to approximate the importance of filters to the network and then execute filter…

计算机视觉与模式识别 · 计算机科学 2021-01-12 Yehui Tang , Yunhe Wang , Yixing Xu , Dacheng Tao , Chunjing Xu , Chao Xu , Chang Xu

A key issue in statistics and machine learning is to automatically select the "right" model complexity, e.g., the number of neighbors to be averaged over in k nearest neighbor (kNN) regression or the polynomial degree in regression with…

机器学习 · 计算机科学 2010-10-04 Marcus Hutter , Minh-Ngoc Tran

Recent success in Deep Reinforcement Learning (DRL) methods has shown that policy optimization with respect to an off-policy distribution via importance sampling is effective for sample reuse. In this paper, we show that the use of…

机器学习 · 计算机科学 2023-02-07 Zichuan Lin , Xiapeng Wu , Mingfei Sun , Deheng Ye , Qiang Fu , Wei Yang , Wei Liu

One of the crucial tasks in many inference problems is the extraction of sparse information out of a given number of high-dimensional measurements. In machine learning, this is frequently achieved using, as a penality term, the $L_p$ norm…

无序系统与神经网络 · 物理学 2012-02-09 Alejandro Lage-Castellanos , Andrea Pagnani , Martin Weigt