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We propose a spurious region guided refinement approach for robustness verification of deep neural networks. Our method starts with applying the DeepPoly abstract domain to analyze the network. If the robustness property cannot be verified,…

人工智能 · 计算机科学 2020-10-16 Pengfei Yang , Renjue Li , Jianlin Li , Cheng-Chao Huang , Jingyi Wang , Jun Sun , Bai Xue , Lijun Zhang

Computing the gradients of a rendering process is paramount for diverse applications in computer vision and graphics. However, accurate computation of these gradients is challenging due to discontinuities and rendering approximations,…

计算机视觉与模式识别 · 计算机科学 2024-07-25 Stanislav Pidhorskyi , Tomas Simon , Gabriel Schwartz , He Wen , Yaser Sheikh , Jason Saragih

Image augmentation techniques have been widely investigated to improve the performance of deep learning (DL) algorithms on mammography classification tasks. Recent methods have proved the efficiency of image augmentation on data deficiency…

计算机视觉与模式识别 · 计算机科学 2023-04-19 Sam B. Tran , Huyen T. X. Nguyen , Chi Phan , Hieu H. Pham , Ha Q. Nguyen

Image classification has been a popular task due to its feasibility in real-world applications. Training neural networks by feeding them RGB images has demonstrated success over it. Nevertheless, improving the classification accuracy and…

计算机视觉与模式识别 · 计算机科学 2024-01-17 Tianhao Bu , Michalis Lazarou , Tania Stathaki

Quality control (QC) of MR images is essential to ensure that downstream analyses such as segmentation can be performed successfully. Currently, QC is predominantly performed visually and subjectively, at significant time and operator cost.…

图像与视频处理 · 电气工程与系统科学 2021-09-07 Richard Shaw , Carole H. Sudre , Sebastien Ourselin , M. Jorge Cardoso , Hugh G. Pemberton

We propose a multi-level method to increase the accuracy of machine learning algorithms for approximating observables in scientific computing, particularly those that arise in systems modeled by differential equations. The algorithm relies…

数值分析 · 数学 2020-07-06 Kjetil O. Lye , Siddhartha Mishra , Roberto Molinaro

We present an adaptive regularization algorithm that can be effectively applied to the optimization problem in deep learning framework. Our regularization algorithm aims to take into account the fitness of data to the current state of model…

机器学习 · 计算机科学 2019-09-02 Junghee Cho , Junseok Kwon , Byung-Woo Hong

Deep learning methods for unsupervised registration often rely on objectives that assume a uniform noise level across the spatial domain (e.g. mean-squared error loss), but noise distributions are often heteroscedastic and input-dependent…

图像与视频处理 · 电气工程与系统科学 2024-07-19 Xiaoran Zhang , Daniel H. Pak , Shawn S. Ahn , Xiaoxiao Li , Chenyu You , Lawrence H. Staib , Albert J. Sinusas , Alex Wong , James S. Duncan

Despite advancements in Graph Neural Networks (GNNs), adaptive attacks continue to challenge their robustness. Certified robustness based on randomized smoothing has emerged as a promising solution, offering provable guarantees that a…

机器学习 · 计算机科学 2025-04-01 Yuni Lai , Yulin Zhu , Yixuan Sun , Yulun Wu , Bin Xiao , Gaolei Li , Jianhua Li , Kai Zhou

Measuring cross-sectional areas in ultrasound images is a standard tool to evaluate disease progress or treatment response. Often addressed today with supervised deep-learning segmentation approaches, existing solutions highly depend upon…

图像与视频处理 · 电气工程与系统科学 2023-08-21 Vanessa Gonzalez Duque , Leonhard Zirus , Yordanka Velikova , Nassir Navab , Diana Mateus

Deep learning models, especially convolutional neural networks, have achieved impressive results in medical image classification. However, these models often produce overconfident predictions, which can undermine their reliability in…

计算机视觉与模式识别 · 计算机科学 2025-10-24 Kushan Choudhury , Shubhrodeep Roy , Ankur Chanda , Shubhajit Biswas , Somenath Kuiry

In the past few years, following the differentiable programming paradigm, there has been a growing interest in computing the gradient information of physical processes (e.g., physical simulation, image rendering). However, such processes…

机器人学 · 计算机科学 2022-06-24 Quentin Le Lidec , Louis Montaut , Cordelia Schmid , Ivan Laptev , Justin Carpentier

While neural networks have achieved high accuracy on standard image classification benchmarks, their accuracy drops to nearly zero in the presence of small adversarial perturbations to test inputs. Defenses based on regularization and…

机器学习 · 计算机科学 2020-11-03 Aditi Raghunathan , Jacob Steinhardt , Percy Liang

In this work we aim to obtain computationally-efficient uncertainty estimates with deep networks. For this, we propose a modified knowledge distillation procedure that achieves state-of-the-art uncertainty estimates both for in and…

机器学习 · 计算机科学 2019-06-14 Erik Englesson , Hossein Azizpour

Uncertainty estimation has been widely studied in medical image segmentation as a tool to provide reliability, particularly in deep learning approaches. However, previous methods generally lack effective supervision in uncertainty…

计算机视觉与模式识别 · 计算机科学 2025-10-15 Yuzhu Li , An Sui , Fuping Wu , Xiahai Zhuang

Optimization, a key tool in machine learning and statistics, relies on regularization to reduce overfitting. Traditional regularization methods control a norm of the solution to ensure its smoothness. Recently, topological methods have…

机器学习 · 计算机科学 2020-11-11 Arnur Nigmetov , Aditi S. Krishnapriyan , Nicole Sanderson , Dmitriy Morozov

Non-parametric maximum likelihood estimation encompasses a group of classic methods to estimate distribution-associated functions from potentially censored and truncated data, with extensive applications in survival analysis. These methods,…

统计方法学 · 统计学 2021-08-05 Justin D. Tubbs , Lane Guolan Chen , Thuan Quoc Thach , Pak C. Sham

This paper addresses a critical preliminary step in radar signal processing: detecting the presence of a radar signal and robustly estimating its bandwidth. Existing methods which are largely statistical feature-based approaches face…

信号处理 · 电气工程与系统科学 2024-03-01 Akila Pemasiri , Zi Huang , Fraser Williams , Ethan Goan , Simon Denman , Terrence Martin , Clinton Fookes

Randomized smoothing has recently emerged as an effective tool that enables certification of deep neural network classifiers at scale. All prior art on randomized smoothing has focused on isotropic $\ell_p$ certification, which has the…

The analysis of digital images using homological procedures is an outstanding topic in the area of Computational Algebraic Topology. In this paper, we describe a certified reduction strategy to deal with digital images, but preserving their…

计算机科学中的逻辑 · 计算机科学 2016-08-11 María Poza , César Domínguez , Jónathan Heras , Julio Rubio