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Skeleton-based action recognition has recently made significant progress. However, data imbalance is still a great challenge in real-world scenarios. The performance of current action recognition algorithms declines sharply when training…

Computer Vision and Pattern Recognition · Computer Science 2025-02-24 Hongda Liu , Yunlong Wang , Min Ren , Junxing Hu , Zhengquan Luo , Guangqi Hou , Zhenan Sun

Mixup is a popular data augmentation technique for training deep neural networks where additional samples are generated by linearly interpolating pairs of inputs and their labels. This technique is known to improve the generalization…

Machine Learning · Computer Science 2023-10-17 Yingtian Zou , Vikas Verma , Sarthak Mittal , Wai Hoh Tang , Hieu Pham , Juho Kannala , Yoshua Bengio , Arno Solin , Kenji Kawaguchi

Although contrastive learning methods have shown prevailing performance on a variety of representation learning tasks, they encounter difficulty when the training dataset is long-tailed. Many researchers have combined contrastive learning…

Machine Learning · Computer Science 2023-08-09 Min-Kook Suh , Seung-Woo Seo

Deep models trained on long-tailed datasets exhibit unsatisfactory performance on tail classes. Existing methods usually modify the classification loss to increase the learning focus on tail classes, which unexpectedly sacrifice the…

Computer Vision and Pattern Recognition · Computer Science 2021-04-22 Shaoyu Zhang , Chen Chen , Xiyuan Hu , Silong Peng

Data augmentation has emerged as a powerful technique for improving the performance of deep neural networks and led to state-of-the-art results in computer vision. However, state-of-the-art data augmentation strongly distorts training…

Computer Vision and Pattern Recognition · Computer Science 2020-10-16 Amil Merchant , Barret Zoph , Ekin Dogus Cubuk

Deep learning model effectiveness in classification tasks is often challenged by the quality and quantity of training data whenever they are affected by strong spurious correlations between specific attributes and target labels. This…

The problem of long-tailed recognition, where the number of examples per class is highly unbalanced, is considered. While training with class-balanced sampling has been shown effective for this problem, it is known to over-fit to few-shot…

Computer Vision and Pattern Recognition · Computer Science 2021-05-04 Bo Liu , Haoxiang Li , Hao Kang , Gang Hua , Nuno Vasconcelos

The long-tailed image classification task remains important in the development of deep neural networks as it explicitly deals with large imbalances in the class frequencies of the training data. While uncommon in engineered datasets, this…

Computer Vision and Pattern Recognition · Computer Science 2023-07-12 Marc-Antoine Lavoie , Steven Waslander

Restricted Boltzmann Machines (RBMs) are one of the fundamental building blocks of deep learning. Approximate maximum likelihood training of RBMs typically necessitates sampling from these models. In many training scenarios, computationally…

Machine Learning · Computer Science 2014-10-02 Guillaume Desjardins , Heng Luo , Aaron Courville , Yoshua Bengio

This paper presents an investigation into long-tail video recognition. We demonstrate that, unlike naturally-collected video datasets and existing long-tail image benchmarks, current video benchmarks fall short on multiple long-tailed…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Toby Perrett , Saptarshi Sinha , Tilo Burghardt , Majid Mirmehdi , Dima Damen

Recent approaches based on metric learning have achieved great progress in few-shot learning. However, most of them are limited to image-level representation manners, which fail to properly deal with the intra-class variations and spatial…

Computer Vision and Pattern Recognition · Computer Science 2021-11-02 Chao Dong , Qi Ye , Wenchao Meng , Kaixiang Yang

Classification on long-tailed distributed data is a challenging problem, which suffers from serious class-imbalance and hence poor performance on tail classes with only a few samples. Owing to this paucity of samples, learning on the tail…

Computation and Language · Computer Science 2022-07-25 Taha ValizadehAslani , Yiwen Shi , Jing Wang , Ping Ren , Yi Zhang , Meng Hu , Liang Zhao , Hualou Liang

Image classification with deep neural networks has seen a surge of technological breakthroughs with promising applications in areas such as face recognition, medical imaging, and autonomous driving. In engineering problems, however, such as…

Computer Vision and Pattern Recognition · Computer Science 2022-07-21 Hongjiang Li , Huanyi Shui , Alemayehu Admasu , Praveen Narayanan , Devesh Upadhyay

Few-shot learning aims to classify unseen classes with a few training examples. While recent works have shown that standard mini-batch training with a carefully designed training strategy can improve generalization ability for unseen…

Machine Learning · Computer Science 2021-03-02 Jin-Woo Seo , Hong-Gyu Jung , Seong-Whan Lee

Long-tailed class imbalance remains a fundamental obstacle in semantic segmentation of high-resolution remote-sensing imagery, where dominant classes shape learned representations and rare classes are systematically under-segmented. This…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Buddhi Wijenayake , Nichula Wasalathilake , Roshan Godaliyadda , Vijitha Herath , Parakrama Ekanayake , Vishal M. Patel

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…

Computer Vision and Pattern Recognition · Computer Science 2020-08-11 Renzhen Wang , Kaiqin Hu , Yanwen Zhu , Jun Shu , Qian Zhao , Deyu Meng

Long-tailed datasets, where head classes comprise much more training samples than tail classes, cause recognition models to get biased towards the head classes. Weighted loss is one of the most popular ways of mitigating this issue, and a…

Computer Vision and Pattern Recognition · Computer Science 2022-09-08 Saptarshi Sinha , Hiroki Ohashi

Dataset distillation creates a small distilled set that enables efficient training by capturing key information from the full dataset. While existing dataset distillation methods perform well on balanced datasets, they struggle under…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Xiao Cui , Yulei Qin , Xinyue Li , Wengang Zhou , Hongsheng Li , Houqiang Li

To address the challenges of long-tailed classification, researchers have proposed several approaches to reduce model bias, most of which assume that classes with few samples are weak classes. However, recent studies have shown that tail…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Yanbiao Ma , Licheng Jiao , Fang Liu , Maoji Wen , Lingling Li , Wenping Ma , Shuyuan Yang , Xu Liu , Puhua Chen

In this paper, we investigate a novel digital network twin (DNT) assisted deep learning (DL) model training framework. In particular, we consider a physical network where a base station (BS) uses several antennas to serve multiple mobile…

Networking and Internet Architecture · Computer Science 2026-03-11 Hanzhi Yu , Hasan Farooq , Julien Forgeat , Shruti Bothe , Kristijonas Cyras , Md Moin Uddin Chowdhury , Mingzhe Chen