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We develop a computationally efficient and robust algorithm for generating pseudo-random samples from a broad class of smooth probability distributions in one and two dimensions. The algorithm is based on inverse transform sampling with a…

数值分析 · 数学 2013-07-05 Sheehan Olver , Alex Townsend

We present a new type of probabilistic model which we call DISsimilarity COefficient Networks (DISCO Nets). DISCO Nets allow us to efficiently sample from a posterior distribution parametrised by a neural network. During training, DISCO…

计算机视觉与模式识别 · 计算机科学 2016-10-31 Diane Bouchacourt , M. Pawan Kumar , Sebastian Nowozin

This paper addresses the problem of inverse covariance (also known as precision matrix) estimation in high-dimensional settings. Specifically, we focus on two classes of estimators: linear shrinkage estimators with a target proportional to…

机器学习 · 统计学 2025-11-21 Lucas Morisset , Adrien Hardy , Alain Durmus

Computing pseudospectra of non-normal matrices is essential for understanding the stability and transient behavior of dynamical systems. Such analysis is critical in applications including fluid dynamics, control systems, and differential…

数值分析 · 数学 2026-05-07 Amit Punia , Rakesh Kumar , Madan Lal

Existing methods for quantifying predictive uncertainty in neural networks are either computationally intractable for large language models or require access to training data that is typically unavailable. We derive a lightweight…

机器学习 · 计算机科学 2026-04-01 Nils Grünefeld , Jes Frellsen , Christian Hardmeier

Approximate Bayesian inference on the basis of summary statistics is well-suited to complex problems for which the likelihood is either mathematically or computationally intractable. However the methods that use rejection suffer from the…

统计计算 · 统计学 2010-05-04 M. G. B. Blum , O. Francois

This paper introduces a novel deep neural network architecture for solving the inverse scattering problem in frequency domain with wide-band data, by directly approximating the inverse map, thus avoiding the expensive optimization loop of…

数值分析 · 数学 2024-08-07 Borong Zhang , Leonardo Zepeda-Núñez , Qin Li

In the first part of this work, we develop a novel scheme for solving nonparametric regression problems. That is the approximation of possibly low regular and noised functions from the knowledge of their approximate values given at some…

统计理论 · 数学 2021-10-27 Asma Ben Saber , Abderrazek Karoui

The topic of deep learning has seen a surge of interest in recent years both within and outside of the field of Statistics. Deep models leverage both nonlinearity and interaction effects to provide superior predictions in many cases when…

统计方法学 · 统计学 2020-09-18 Paul A. Parker , Scott H. Holan

Accurate estimates of rotation are crucial to vision-based motion estimation in augmented reality and robotics. In this work, we present a method to extract probabilistic estimates of rotation from deep regression models. First, we build on…

计算机视觉与模式识别 · 计算机科学 2020-05-11 Valentin Peretroukhin , Brandon Wagstaff , Matthew Giamou , Jonathan Kelly

Counterfactual explanation is a common class of methods to make local explanations of machine learning decisions. For a given instance, these methods aim to find the smallest modification of feature values that changes the predicted…

人工智能 · 计算机科学 2022-12-22 Victor Guyomard , Françoise Fessant , Thomas Guyet , Tassadit Bouadi , Alexandre Termier

In this paper, a new method of training pipeline is discussed to achieve significant performance on the task of anti-spoofing with RGB image. We explore and highlight the impact of using pseudo-depth to pre-train a network that will be used…

计算机视觉与模式识别 · 计算机科学 2021-03-22 Chang Keun Paik , Naeun Ko , Youngjoon Yoo

In this paper we present ActiveStereoNet, the first deep learning solution for active stereo systems. Due to the lack of ground truth, our method is fully self-supervised, yet it produces precise depth with a subpixel precision of $1/30th$…

In the present work, we demonstrate how the pseudoinverse concept from linear algebra can be used to represent and analyze the boundary conditions of linear systems of partial differential equations. This approach has theoretical and…

数值分析 · 数学 2024-01-05 Pelle Olsson

Stochastic nonlinear dynamical systems are ubiquitous in modern, real-world applications. Yet, estimating the unknown parameters of stochastic, nonlinear dynamical models remains a challenging problem. The majority of existing methods…

机器学习 · 统计学 2022-05-06 Anubhab Ghosh , Mohamed Abdalmoaty , Saikat Chatterjee , Håkan Hjalmarsson

Estimating mutual correlations between random variables or data streams is essential for intelligent behavior and decision-making. As a fundamental quantity for measuring statistical relationships, mutual information has been extensively…

信息论 · 计算机科学 2024-02-16 Zhengyang Hu , Song Kang , Qunsong Zeng , Kaibin Huang , Yanchao Yang

Deep learning has revolutionized modern data science. However, how to accurately quantify the uncertainty of predictions from large-scale deep neural networks (DNNs) remains an unresolved issue. To address this issue, we introduce a novel…

机器学习 · 统计学 2025-08-05 Yan Sun , Faming Liang

Deep learning-based models have demonstrated remarkable success in solving illposed inverse problems; however, many fail to strictly adhere to the physical constraints imposed by the measurement process. In this work, we introduce a…

机器学习 · 计算机科学 2025-05-22 Jorge Bacca

Current state-of-the-art weakly supervised object detection (WSOD) studies mainly follow a two-stage training strategy which integrates a fully supervised detector (FSD) with a pure WSOD model. There are two main problems hindering the…

计算机视觉与模式识别 · 计算机科学 2022-03-21 Jun Wang , Hefeng Zhou , Xiaohan Yu

The success of deep learning has inspired recent interests in applying neural networks in statistical inference. In this paper, we investigate the use of deep neural networks for nonparametric regression with measurement errors. We propose…

机器学习 · 统计学 2020-07-16 Zhirui Hu , Zheng Tracy Ke , Jun S Liu