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We introduce a novel optimization algorithm for image recovery under learned sparse and low-rank constraints, which we parameterize as weighted extensions of the $\ell_p^p$-vector and $\mathcal S_p^p$ Schatten-matrix quasi-norms for…

计算机视觉与模式识别 · 计算机科学 2023-04-21 Stamatios Lefkimmiatis , Iaroslav Koshelev

Total least squares (TLS) is an effective method for solving linear equations with the situations, when noise is not just in observation matrices but also in mapping matrices. Moreover, the Tikhonov regularization is widely used in plenty…

数值分析 · 数学 2022-11-14 F. Han , Y. Wei , P. Xie

We propose a block least mean square (LMS) algorithm to monitor the longitudinal power profile of a fiber-optic link through receiver-based digital data from a coherent detector. Compared to the benchmark least squares (LS) method, the…

信号处理 · 电气工程与系统科学 2026-03-03 Paolo Serena , Chiara Lasagni , Alberto Bononi , Fabien Boitier , Joana Girard-Jollet

In this paper we propose a variant of the linear least squares model allowing practitioners to partition the input features into groups of variables that they require to contribute similarly to the final result. The output allows…

机器学习 · 计算机科学 2024-07-17 Roberto Esposito , Mattia Cerrato , Marco Locatelli

We develop latent variable models for Bayesian learning based low-rank matrix completion and reconstruction from linear measurements. For under-determined systems, the developed methods are shown to reconstruct low-rank matrices when…

机器学习 · 统计学 2015-01-26 Martin Sundin , Cristian R. Rojas , Magnus Jansson , Saikat Chatterjee

We study the sparse recovery problem with an underdetermined linear system characterized by a Kronecker-structured dictionary and a Kronecker-supported sparse vector. We cast this problem into the sparse Bayesian learning (SBL) framework…

信号处理 · 电气工程与系统科学 2023-08-03 Yanbin He , Geethu Joseph

This paper introduces two novel approaches for Online Multi-Task Learning (MTL) Regression Problems. We employ a high performance graph-based MTL formulation and develop two alternative recursive versions based on the Weighted Recursive…

机器学习 · 统计学 2024-03-19 Gabriel R. Lencione , Fernando J. Von Zuben

Low-rank tensor decomposition generalizes low-rank matrix approximation and is a powerful technique for discovering low-dimensional structure in high-dimensional data. In this paper, we study Tucker decompositions and use tools from…

数据结构与算法 · 计算机科学 2021-07-23 Matthew Fahrbach , Mehrdad Ghadiri , Thomas Fu

We provide an axiomatic characterization of the Logarithmic Least Squares Method (sometimes called row geometric mean), used for deriving a preference vector from a pairwise comparison matrix. This procedure is shown to be the only one…

最优化与控制 · 数学 2020-08-26 László Csató

The partial least squares (PLS) is a popular modeling technique commonly used in social sciences. The traditional PLS algorithm deals with variables measured on interval scales while data are often collected on ordinal scales: a…

统计方法学 · 统计学 2012-12-21 Gabriele Cantaluppi

In the famous least sum of trimmed squares (LTS) of residuals estimator (Rousseeuw (1984)), residuals are first squared and then trimmed. In this article, we first trim residuals - using a depth trimming scheme - and then square the rest of…

统计方法学 · 统计学 2022-11-28 Yijun Zuo

We propose and analyse a reduced-rank method for solving least-squares regression problems with infinite dimensional output. We derive learning bounds for our method, and study under which setting statistical performance is improved in…

Solving symmetric positive definite linear problems is a fundamental computational task in machine learning. The exact solution, famously, is cubicly expensive in the size of the matrix. To alleviate this problem, several linear-time…

机器学习 · 计算机科学 2017-06-02 Filip de Roos , Philipp Hennig

Developing efficient methods for solving parametric partial differential equations is crucial for addressing inverse problems. This work introduces a Least-Squares-based Neural Network (LS-Net) method for solving linear parametric PDEs. It…

数值分析 · 数学 2025-02-13 Shima Baharlouei , Jamie M. Taylor , Carlos Uriarte , David Pardo

Randomized matrix compression techniques, such as the Johnson-Lindenstrauss transform, have emerged as an effective and practical way for solving large-scale problems efficiently. With a focus on computational efficiency, however, forsaking…

机器学习 · 统计学 2015-10-19 Stephen Becker , Ban Kawas , Marek Petrik , Karthikeyan N. Ramamurthy

Partial least square regression (PLSR) is a widely-used statistical model to reveal the linear relationships of latent factors that comes from the independent variables and dependent variables. However, traditional methods to solve PLSR…

机器学习 · 计算机科学 2022-08-16 Wanguang Yin , Zhichao Liang , Jianguo Zhang , Quanying Liu

In this paper, we give a tutorial on asymptotic properties of the Least Square (LS) and Regularized Least Squares (RLS) estimators for the finite impulse response model with filtered white noise inputs. We provide three perspectives: the…

统计理论 · 数学 2022-01-03 Yue Ju , Tianshi Chen , Biqiang Mu , Lennart Ljung

In the last few decades both the volume of high-quality observing data on variable stars and common access to them have boomed; however the standard used methods of data processing and interpretation have lagged behind this progress. The…

天体物理学 · 物理学 2007-11-29 Z. Mikulasek

This paper extends recursive least squares (RLS) to include time-varying regularization. This extension provides flexibility for updating the least squares regularization term in real time. Existing results with constant regularization…

信号处理 · 电气工程与系统科学 2025-01-09 Brian Lai , Dimitra Panagou , Dennis S. Bernstein

Shrinkage can effectively improve the condition number and accuracy of covariance matrix estimation, especially for low-sample-support applications with the number of training samples smaller than the dimensionality. This paper investigates…

信息论 · 计算机科学 2018-10-22 Jun Tong , Rui Hu , Jiangtao Xi , Zhitao Xiao , Qinghua Guo , Yanguang Yu