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Linear inverse problems are ubiquitous. Often the measurements do not follow a Gaussian distribution. Additionally, a model matrix with a large condition number can complicate the problem further by making it ill-posed. In this case, the…

统计方法学 · 统计学 2016-06-03 Marta Martinez-Camara , Michael Muma , Benjamin Bejar , Abdelhak M. Zoubir , Martin Vetterli

We consider the problem of learning support vector machines robust to uncertainty. It has been established in the literature that typical loss functions, including the hinge loss, are sensible to data perturbations and outliers, thus…

机器学习 · 计算机科学 2024-02-06 Valentina Cepeda , Andrés Gómez , Shaoning Han

In many machine learning tasks, a common approach for dealing with large-scale data is to build a small summary, {\em e.g.,} coreset, that can efficiently represent the original input. However, real-world datasets usually contain outliers…

机器学习 · 计算机科学 2022-01-24 Zixiu Wang , Yiwen Guo , Hu Ding

Multi-dimensional scaling (MDS) plays a central role in data-exploration, dimensionality reduction and visualization. State-of-the-art MDS algorithms are not robust to outliers, yielding significant errors in the embedding even when only a…

计算机视觉与模式识别 · 计算机科学 2018-02-08 Leonid Blouvshtein , Daniel Cohen-Or

Density ratio estimation is a vital tool in both machine learning and statistical community. However, due to the unbounded nature of density ratio, the estimation procedure can be vulnerable to corrupted data points, which often pushes the…

机器学习 · 统计学 2017-11-07 Song Liu , Akiko Takeda , Taiji Suzuki , Kenji Fukumizu

Outlier detection in a large-scale database is a significant and complex issue in knowledge discovering field. As the data distributions are obscure and uncertain in high dimensional space, most existing solutions try to solve the issue…

人工智能 · 计算机科学 2014-05-06 Zhana Bao

We propose a robust and scalable procedure for general optimization and inference problems on manifolds leveraging the classical idea of `median-of-means' estimation. This is motivated by ubiquitous examples and applications in modern data…

统计方法学 · 统计学 2020-06-16 Lizhen Lin , Drew Lazar , Bayan Sarpabayeva , David B. Dunson

To achieve outlier-robust geometric estimation, robust objective functions are generally employed to mitigate the influence of outliers. The widely used consensus maximization(CM) is highly robust when paired with global…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Tianyu Huang , Liangzu Peng , Xinyue Zhang , Tongfan Guan , Jinhu Dong , Haoang Li , Laurent Kneip , Yun-Hui Liu

Methods based on diffusion models (DMs) for solving inverse problems (IPs) have recently achieved remarkable performance. However, DM-based methods typically struggle against outliers, which are common in real-world measurements. In this…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Yang Zheng , Jiahua Liu , Tongyao Pang , Wen Li , Zhaoqiang Liu

We consider a fundamental problem in unsupervised learning called \emph{subspace recovery}: given a collection of $m$ points in $\mathbb{R}^n$, if many but not necessarily all of these points are contained in a $d$-dimensional subspace $T$…

计算复杂性 · 计算机科学 2013-12-05 Moritz Hardt , Ankur Moitra

Multiview Structure from Motion is a fundamental and challenging computer vision problem. A recent deep-based approach utilized matrix equivariant architectures for simultaneous recovery of camera pose and 3D scene structure from large…

计算机视觉与模式识别 · 计算机科学 2025-08-22 Fadi Khatib , Yoni Kasten , Dror Moran , Meirav Galun , Ronen Basri

In this article, we consider the problem of outlier-robust state estimation where the measurement noise can be correlated. Outliers in data arise due to many reasons like sensor malfunctioning, environmental behaviors, communication…

信号处理 · 电气工程与系统科学 2024-08-21 Aamir Hussain Chughtai , Muhammad Tahir , Momin Uppal

Due to the highly non-convex nature of large-scale robust parameter estimation, avoiding poor local minima is challenging in real-world applications where input data is contaminated by a large or unknown fraction of outliers. In this paper,…

计算机视觉与模式识别 · 计算机科学 2020-03-23 Huu Le , Christopher Zach

Machine learning and data analysis have been used in many robotics fields, especially for modelling. Data are usually the result of sensor measurements and, as such, they might be subjected to noise and outliers. The presence of outliers…

机器人学 · 计算机科学 2019-08-26 Francesco Cursi , Guang-Zhong Yang

Robust 3D registration is a fundamental problem in computer vision and robotics, where the goal is to estimate the geometric transformation between two sets of measurements in the presence of noise, mismatches, and extreme outlier…

计算机视觉与模式识别 · 计算机科学 2026-04-09 Xianyun Qian , Fei Wen , Peilin Liu

This paper describes recursive algorithms for state estimation of linear dynamical systems when measurements are noisy with unknown bias and/or outliers. For situations with noisy and biased measurements, algorithms are proposed that…

系统与控制 · 电气工程与系统科学 2025-03-11 Krishan Mohan Nagpal

Ellipsoid fitting is of general interest in machine vision, such as object detection and shape approximation. Most existing approaches rely on the least-squares fitting of quadrics, minimizing the algebraic or geometric distances, with…

计算机视觉与模式识别 · 计算机科学 2021-10-27 Zhao Mingyang , Jia Xiaohong , Ma Lei , Qiu Xinlin , Jiang Xin , Yan Dong-Ming

For many inference problems in statistics and econometrics, the unknown parameter is identified by a set of moment conditions. A generic method of solving moment conditions is the Generalized Method of Moments (GMM). However, classical GMM…

机器学习 · 统计学 2021-10-18 Dhruv Rohatgi , Vasilis Syrgkanis

There exist multiple methods to detect outliers in multivariate data in the literature, but most of them require to estimate the covariance matrix. The higher the dimension, the more complex the estimation of the matrix becoming impossible…

统计方法学 · 统计学 2020-12-01 P. Navarro-Esteban , J. A. Cuesta-Albertos

The support vector machine (SVM) is one of the most successful learning methods for solving classification problems. Despite its popularity, SVM has a serious drawback, that is sensitivity to outliers in training samples. The penalty on…

机器学习 · 统计学 2014-09-04 Takafumi Kanamori , Shuhei Fujiwara , Akiko Takeda