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Modern neural networks are undeniably successful. Numerous studies have investigated how the curvature of loss landscapes can affect the quality of solutions. In this work we consider the Hessian matrix during network training. We reiterate…

机器学习 · 计算机科学 2023-05-31 Lawrence Wang , Stephen J. Roberts

Deep learning models, despite their impressive achievements, suffer from high computational costs and memory requirements, limiting their usability in resource-constrained environments. Sparse neural networks significantly alleviate these…

机器学习 · 计算机科学 2026-03-16 Jie Ji , Gen Li , Kaiyuan Deng , Fatemeh Afghah , Xiaolong Ma

Gradient descent is the primary workhorse for optimizing large-scale problems in machine learning. However, its performance is highly sensitive to the choice of the learning rate. A key limitation of gradient descent is its lack of natural…

最优化与控制 · 数学 2025-07-15 Oscar Smee , Fred Roosta , Stephen J. Wright

While the Segment Anything Model (SAM) excels in semantic segmentation for general-purpose images, its performance significantly deteriorates when applied to medical images, primarily attributable to insufficient representation of medical…

计算机视觉与模式识别 · 计算机科学 2023-11-07 Yiming Zhang , Tianang Leng , Kun Han , Xiaohui Xie

In gradient descent dynamics of neural networks, the top eigenvalue of the loss Hessian (sharpness) displays a variety of robust phenomena throughout training. This includes early time regimes where the sharpness may decrease during early…

机器学习 · 计算机科学 2025-02-17 Dayal Singh Kalra , Tianyu He , Maissam Barkeshli

We present SAM, a biologically-plausible selective attention-driven modulation approach to enhance classification models in a continual learning setting. Inspired by neurophysiological evidence that the primary visual cortex does not…

Industrial X-ray computed tomography (XCT) is a powerful tool for non-destructive characterization of materials and manufactured components. XCT commonly accompanied by advanced image analysis and computer vision algorithms to extract…

计算机视觉与模式识别 · 计算机科学 2024-12-17 Anika Tabassum , Amirkoushyar Ziabari

Recent advances in vision foundation models, such as the Segment Anything Model (SAM) and its successor SAM2, have achieved state-of-the-art performance on general image segmentation benchmarks. However, these models struggle in adverse…

计算机视觉与模式识别 · 计算机科学 2025-09-08 Dharsan Ravindran , Kevin Wang , Zhuoyuan Cao , Saleh Abdelrahman , Jeffery Wu

Approximate second-order optimization methods often exhibit poorer generalization compared to first-order approaches. In this work, we look into this issue through the lens of the loss landscape and find that existing second-order methods…

机器学习 · 计算机科学 2025-06-25 Dahun Shin , Dongyeop Lee , Jinseok Chung , Namhoon Lee

The performance of optimization methods is often tied to the spectrum of the objective Hessian. Yet, conventional assumptions, such as smoothness, do often not enable us to make finely-grained convergence statements -- particularly not for…

最优化与控制 · 数学 2024-02-08 Nikita Doikov , Sebastian U. Stich , Martin Jaggi

Edge labels are typically at various granularity levels owing to the varying preferences of annotators, thus handling the subjectivity of per-pixel labels has been a focal point for edge detection. Previous methods often employ a simple…

计算机视觉与模式识别 · 计算机科学 2025-04-22 Xing Liufu , Chaolei Tan , Xiaotong Lin , Yonggang Qi , Jinxuan Li , Jian-Fang Hu

Methods for improving deep neural network training times and model generalizability consist of various data augmentation, regularization, and optimization approaches, which tend to be sensitive to hyperparameter settings and make…

机器学习 · 计算机科学 2022-11-02 Masud An-Nur Islam Fahim , Jani Boutellier

Modern machine learning solutions require extensive data collection where labeling remains costly. To reduce this burden, open set active learning approaches aim to select informative samples from a large pool of unlabeled data that…

机器学习 · 计算机科学 2025-10-27 Young In Kim , Andrea Agiollo , Rajiv Khanna

Accurate segmentation of cell nuclei in histopathology images is essential for numerous biomedical research and clinical applications. However, existing cell nucleus segmentation methods only consider a single dataset (i.e., primary…

计算机视觉与模式识别 · 计算机科学 2025-03-28 Jiahe Qian , Yaoyu Fang , Jinkui Hao , Bo Zhou

Toward achieving robust and defensive neural networks, the robustness against the weight parameters perturbations, i.e., sharpness, attracts attention in recent years (Sun et al., 2020). However, sharpness is known to remain a critical…

机器学习 · 计算机科学 2021-06-29 Hikaru Ibayashi , Takuo Hamaguchi , Masaaki Imaizumi

How to extract more and useful information for single image super resolution is an imperative and difficult problem. Learning-based method is a representative method for such task. However, the results are not so stable as there may exist…

图像与视频处理 · 电气工程与系统科学 2020-03-25 Hu Liang , Shengrong Zhao

Deformable registration is a fundamental task in medical image processing, aiming to achieve precise alignment by establishing nonlinear correspondences between images. Traditional methods offer good adaptability and interpretability but…

计算机视觉与模式识别 · 计算机科学 2025-05-13 Jing Hu , Kaiwei Yu , Hongjiang Xian , Shu Hu , Xin Wang

Stochastic Gradient Descent (SGD) stands as a cornerstone optimization algorithm with proven real-world empirical successes but relatively limited theoretical understanding. Recent research has illuminated a key factor contributing to its…

机器学习 · 计算机科学 2024-01-24 Gregory Dexter , Borja Ocejo , Sathiya Keerthi , Aman Gupta , Ayan Acharya , Rajiv Khanna

Segment Anything Model (SAM) has gained significant recognition in the field of semantic segmentation due to its versatile capabilities and impressive performance. Despite its success, SAM faces two primary limitations: (1) it relies…

计算机视觉与模式识别 · 计算机科学 2026-01-21 Yuchen Li , Li Zhang , Youwei Liang , Pengtao Xie

The primary challenge in video super-resolution (VSR) is to handle large motions in the input frames, which makes it difficult to accurately aggregate information from multiple frames. Existing works either adopt deformable convolutions or…

计算机视觉与模式识别 · 计算机科学 2023-05-15 Zhihe Lu , Zeyu Xiao , Jiawang Bai , Zhiwei Xiong , Xinchao Wang