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Adaptive optimization methods (such as Adam) play a major role in LLM pretraining, significantly outperforming Gradient Descent (GD). Recent studies have proposed new smoothness assumptions on the loss function to explain the advantages of…

机器学习 · 计算机科学 2025-12-02 Robin Yadav , Shuo Xie , Tianhao Wang , Zhiyuan Li

Heterogeneous face recognition (HFR) refers to matching face images acquired from different domains with wide applications in security scenarios. This paper presents a deep neural network approach namely Multi-Margin based Decorrelation…

计算机视觉与模式识别 · 计算机科学 2020-05-26 Bing Cao , Nannan Wang , Xinbo Gao , Jie Li , Zhifeng Li

Many real-world classification problems, such as plant identification, have extremely long-tailed class distributions. In order for prediction sets to be useful in such settings, they should (i) provide good class-conditional coverage,…

机器学习 · 统计学 2026-03-02 Tiffany Ding , Jean-Baptiste Fermanian , Joseph Salmon

Long-tailed recognition with imbalanced class distribution naturally emerges in practical machine learning applications. Existing methods such as data reweighing, resampling, and supervised contrastive learning enforce the class balance…

计算机视觉与模式识别 · 计算机科学 2023-09-12 Chengkai Hou , Jieyu Zhang , Haonan Wang , Tianyi Zhou

In this paper, we propose an online learning algorithm PRIL for learning ranking classifiers using interval labeled data and show its correctness. We show its convergence in finite number of steps if there exists an ideal classifier such…

机器学习 · 计算机科学 2018-02-13 Naresh Manwani

Perturbation with diverse unlabeled data has proven beneficial for semi-supervised medical image segmentation (SSMIS). While many works have successfully used various perturbation techniques, a deeper understanding of learning perturbations…

图像与视频处理 · 电气工程与系统科学 2025-05-23 Zhenyan Yao , Miao Zhang , Lanhu Wu , Yongri Piao , Feng Tian , Weibing Sun , Huchuan Lu

We consider the problem of cost sensitive multiclass classification, where we would like to increase the sensitivity of an important class at the expense of a less important one. We adopt an {\em apportioned margin} framework to address…

机器学习 · 计算机科学 2020-02-05 Lee-Ad Gottlieb , Eran Kaufman , Aryeh Kontorovich

Semantic segmentation usually suffers from a long-tail data distribution. Due to the imbalanced number of samples across categories, the features of those tail classes may get squeezed into a narrow area in the feature space. Towards a…

计算机视觉与模式识别 · 计算机科学 2023-06-06 Yuchao Wang , Jingjing Fei , Haochen Wang , Wei Li , Tianpeng Bao , Liwei Wu , Rui Zhao , Yujun Shen

Long-tailed distributions in class-imbalanced data present a fundamental challenge for deep learning models, which tend to be biased toward majority classes. While recent methods for long-tailed recognition have mitigated this issue, they…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Heegeon Yoon , Heeyoung Kim

Semantic segmentation consists of assigning a semantic label to each pixel according to predefined classes. This process facilitates the understanding of object appearance and spatial relationships, playing an important role in the global…

计算机视觉与模式识别 · 计算机科学 2026-03-31 Mariana Dória Prata Lima , Gilson Antonio Giraldi , Jaime S. Cardoso

Long-tailed semi-supervised learning (LTSSL) presents a formidable challenge where models must overcome the scarcity of tail samples while mitigating the noise from unreliable pseudo-labels. Most prior LTSSL methods are designed to train…

机器学习 · 计算机科学 2026-04-09 Zhiyuan Huang , Jiahao Chen , Bing Su

Brain aging is a regional phenomenon, a facet that remains relatively under-explored within the realm of brain age prediction research using machine learning methods. Voxel-level predictions can provide localized brain age estimates that…

计算机视觉与模式识别 · 计算机科学 2024-04-26 Neha Gianchandani , Mahsa Dibaji , Johanna Ospel , Fernando Vega , Mariana Bento , M. Ethan MacDonald , Roberto Souza

Understanding generalization in deep neural networks is an active area of research. A promising avenue of exploration has been that of margin measurements: the shortest distance to the decision boundary for a given sample or that sample's…

机器学习 · 计算机科学 2024-05-29 Coenraad Mouton

Learning a regression function using censored or interval-valued output data is an important problem in fields such as genomics and medicine. The goal is to learn a real-valued prediction function, and the training output labels indicate an…

机器学习 · 统计学 2017-10-30 Alexandre Drouin , Toby Dylan Hocking , François Laviolette

Deep neural networks often degrade significantly when training data suffer from class imbalance problems. Existing approaches, e.g., re-sampling and re-weighting, commonly address this issue by rearranging the label distribution of training…

计算机视觉与模式识别 · 计算机科学 2020-08-11 Renzhen Wang , Kaiqin Hu , Yanwen Zhu , Jun Shu , Qian Zhao , Deyu Meng

Recently, prompt tuning \cite{lester2021power} has gradually become a new paradigm for NLP, which only depends on the representation of the words by freezing the parameters of pre-trained language models (PLMs) to obtain remarkable…

计算与语言 · 计算机科学 2022-01-31 Pan He , Yuxi Chen , Yan Wang , Yanru Zhang

Generalizability is an important problem in deep neural networks, especially in the context of the variability of data acquisition in clinical magnetic resonance imaging (MRI). Recently, the Spatially Localized Atlas Network Tiles (SLANT)…

图像与视频处理 · 电气工程与系统科学 2019-08-14 Camilo Bermudez , Justin Blaber , Samuel W. Remedios , Jess E. Reynolds , Catherine Lebel , Maureen McHugo , Stephan Heckers , Yuankai Huo , Bennett A. Landman

Real-world data is often ambiguous; for example, human annotation produces instances with multiple conflicting class labels. Partial-label learning (PLL) aims at training a classifier in this challenging setting, where each instance is…

机器学习 · 计算机科学 2025-05-26 Tobias Fuchs , Florian Kalinke

The human brain undergoes dynamic, potentially pathology-driven, structural changes throughout a lifespan. Longitudinal Magnetic Resonance Imaging (MRI) and other neuroimaging data are valuable for characterizing trajectories of change…

计算机视觉与模式识别 · 计算机科学 2025-10-14 Agampreet Aulakh , Nils D. Forkert , Matthias Wilms

Recent advances in multimodal large language models (MLLMs) have demonstrated strong capabilities in understanding general visual content. However, these general-domain MLLMs perform poorly in face perception tasks, often producing…

计算机视觉与模式识别 · 计算机科学 2025-04-29 Jingzhi Li , Changjiang Luo , Ruoyu Chen , Hua Zhang , Wenqi Ren , Jianhou Gan , Xiaochun Cao