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Deep neural networks trained using a softmax layer at the top and the cross-entropy loss are ubiquitous tools for image classification. Yet, this does not naturally enforce intra-class similarity nor inter-class margin of the learned deep…

计算机视觉与模式识别 · 计算机科学 2017-12-06 José Lezama , Qiang Qiu , Pablo Musé , Guillermo Sapiro

Open-world object detection (OWOD) is a challenging problem that combines object detection with incremental learning and open-set learning. Compared to standard object detection, the OWOD setting is task to: 1) detect objects seen during…

计算机视觉与模式识别 · 计算机科学 2023-02-24 Jinan Yu , Liyan Ma , Zhenglin Li , Yan Peng , Shaorong Xie

Learning discriminative representations is a central goal of supervised deep learning. While cross-entropy (CE) remains the dominant objective for classification, it does not explicitly enforce desirable geometric properties in the…

机器学习 · 计算机科学 2026-04-13 Matheus Vinícius Todescato , Joel Luís Carbonera

Standard deep learning models that employ the categorical cross-entropy loss are known to perform well at image classification tasks. However, many standard models thus obtained often exhibit issues like feature redundancy, low…

计算机视觉与模式识别 · 计算机科学 2020-09-24 Hongjun Choi , Anirudh Som , Pavan Turaga

The development of deep convolutional neural network architecture is critical to the improvement of image classification task performance. A lot of studies of image classification based on deep convolutional neural network focus on the…

计算机视觉与模式识别 · 计算机科学 2019-08-02 Ke Zhang , Xinsheng Wang , Yurong Guo , Zhenbing Zhao , Zhanyu Ma , Tony X. Han

Machine unlearning seeks to remove the influence of particular data or class from trained models to meet privacy, legal, or ethical requirements. Existing unlearning methods tend to forget shallowly: phenomenon of an unlearned model pretend…

机器学习 · 计算机科学 2025-07-23 Jaeheun Jung , Bosung Jung , Suhyun Bae , Donghun Lee

Convolutional neural networks (CNNs) have been widely used for image classification. Despite its high accuracies, CNN has been shown to be easily fooled by some adversarial examples, indicating that CNN is not robust enough for pattern…

计算机视觉与模式识别 · 计算机科学 2018-05-10 Hong-Ming Yang , Xu-Yao Zhang , Fei Yin , Cheng-Lin Liu

Semantic segmentation models classify pixels into a set of known (``in-distribution'') visual classes. When deployed in an open world, the reliability of these models depends on their ability not only to classify in-distribution pixels but…

计算机视觉与模式识别 · 计算机科学 2023-08-22 Yuyuan Liu , Choubo Ding , Yu Tian , Guansong Pang , Vasileios Belagiannis , Ian Reid , Gustavo Carneiro

Contrastive learning has emerged as a powerful method in deep learning, excelling at learning effective representations through contrasting samples from different distributions. However, neural collapse, where embeddings converge into a…

机器学习 · 计算机科学 2024-10-08 Huanran Li , Manh Nguyen , Daniel Pimentel-Alarcón

While cross entropy (CE) is the most commonly used loss to train deep neural networks for classification tasks, many alternative losses have been developed to obtain better empirical performance. Among them, which one is the best to use is…

机器学习 · 计算机科学 2022-10-11 Jinxin Zhou , Chong You , Xiao Li , Kangning Liu , Sheng Liu , Qing Qu , Zhihui Zhu

In this paper, we propose a Dual Focal Loss (DFL) function, as a replacement for the standard cross entropy (CE) function to achieve a better treatment of the unbalanced classes in a dataset. Our DFL method is an improvement on the recently…

计算机视觉与模式识别 · 计算机科学 2020-11-30 Md Sazzad Hossain , Andrew P Paplinski , John M Betts

The cross-entropy softmax loss is the primary loss function used to train deep neural networks. On the other hand, the focal loss function has been demonstrated to provide improved performance when there is an imbalance in the number of…

计算机视觉与模式识别 · 计算机科学 2022-06-17 Leslie N. Smith

Assessing disease severity with ordinal classes, where each class reflects increasing severity levels, benefits from loss functions designed for this ordinal structure. Traditional categorical loss functions, like Cross-Entropy (CE), often…

计算机视觉与模式识别 · 计算机科学 2025-01-14 Gorkem Polat , Ümit Mert Çağlar , Alptekin Temizel

A deep neural network of multiple nonlinear layers forms a large function space, which can easily lead to overfitting when it encounters small-sample data. To mitigate overfitting in small-sample classification, learning more discriminative…

计算机视觉与模式识别 · 计算机科学 2020-07-15 Xiaoxu Li , Dongliang Chang , Zhanyu Ma , Zheng-Hua Tan , Jing-Hao Xue , Jie Cao , Jingyi Yu , Jun Guo

This paper introduces a new loss function, OSM (One-Sided Margin), to solve maximum-margin classification problems effectively. Unlike the hinge loss, in OSM the margin is explicitly determined with corresponding hyperparameters and then…

机器学习 · 计算机科学 2022-06-03 Ali Karimi , Zahra Mousavi Kouzehkanan , Reshad Hosseini , Hadi Asheri

In computer vision, it is often observed that formulating regression problems as a classification task often yields better performance. We investigate this curious phenomenon and provide a derivation to show that classification, with the…

计算机视觉与模式识别 · 计算机科学 2023-03-01 Shihao Zhang , Linlin Yang , Michael Bi Mi , Xiaoxu Zheng , Angela Yao

Gesture recognition is a foundational task in human-machine interaction (HMI). While there has been significant progress in gesture recognition based on surface electromyography (sEMG), accurate recognition of predefined gestures only…

计算机视觉与模式识别 · 计算机科学 2023-12-06 Chen Liu , Can Han , Chengfeng Zhou , Crystal Cai , Suncheng Xiang , Hualiang Ni , Dahong Qian

The contextual information is critical for various computer vision tasks, previous works commonly design plug-and-play modules and structural losses to effectively extract and aggregate the global context. These methods utilize fine-label…

计算机视觉与模式识别 · 计算机科学 2023-02-24 Jing Wang , Jiangyun Li , Wei Li , Lingfei Xuan , Tianxiang Zhang , Wenxuan Wang

The development of deep convolutional neural network architecture is critical to the improvement of image classification task performance. Many image classification studies use deep convolutional neural network and focus on modifying the…

计算机视觉与模式识别 · 计算机科学 2021-08-30 Ke Zhang , Yurong Guo , Xinsheng Wang , Dongliang Chang , Zhenbing Zhao , Zhanyu Ma , Tony X. Han

Neural networks are trained by minimizing a loss function that defines the discrepancy between the predicted model output and the target value. The selection of the loss function is crucial to achieve task-specific behaviour and highly…

计算机视觉与模式识别 · 计算机科学 2024-04-22 Shakhnaz Akhmedova , Nils Körber
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