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Long-tailed multi-label visual recognition (LTML) task is a highly challenging task due to the label co-occurrence and imbalanced data distribution. In this work, we propose a unified framework for LTML, namely prompt tuning with…

Computer Vision and Pattern Recognition · Computer Science 2024-06-19 Peng Xia , Di Xu , Ming Hu , Lie Ju , Zongyuan Ge

Deep neural networks may perform poorly when training datasets are heavily class-imbalanced. Recently, two-stage methods decouple representation learning and classifier learning to improve performance. But there is still the vital issue of…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Zhisheng Zhong , Jiequan Cui , Shu Liu , Jiaya Jia

In this work, we introduce a novel strategy for long-tail recognition that addresses the tail classes' few-shot problem via training-free knowledge transfer. Our objective is to transfer knowledge acquired from information-rich common…

Computer Vision and Pattern Recognition · Computer Science 2022-04-13 Sarah Parisot , Pedro M. Esperanca , Steven McDonagh , Tamas J. Madarasz , Yongxin Yang , Zhenguo Li

Long-tail class incremental learning (LT CIL) remains highly challenging because the scarcity of samples in tail classes not only hampers their learning but also exacerbates catastrophic forgetting under continuously evolving and imbalanced…

Artificial Intelligence · Computer Science 2026-03-24 Xi Wang , Xu Yang , Donghao Sun , Cheng Deng

Real world data often have a long-tailed and open-ended distribution. A practical recognition system must classify among majority and minority classes, generalize from a few known instances, and acknowledge novelty upon a never seen…

Computer Vision and Pattern Recognition · Computer Science 2019-04-17 Ziwei Liu , Zhongqi Miao , Xiaohang Zhan , Jiayun Wang , Boqing Gong , Stella X. Yu

Long-tailed visual recognition is challenging not only due to class imbalance but also because of varying classification difficulty across categories. Simply reweighting classes by frequency often overlooks those that are intrinsically hard…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Xiaolei Wei , Yi Ouyang , Haibo Ye

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

Long-tailed object detection faces great challenges because of its extremely imbalanced class distribution. Recent methods mainly focus on the classification bias and its loss function design, while ignoring the subtle influence of the…

Computer Vision and Pattern Recognition · Computer Science 2024-02-01 Ke Zhu , Minghao Fu , Jie Shao , Tianyu Liu , Jianxin Wu

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

Real-world data tends to follow a long-tailed distribution, where the class imbalance results in dominance of the head classes during training. In this paper, we propose a frustratingly simple but effective step-wise learning framework to…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Na Dong , Yongqiang Zhang , Mingli Ding , Gim Hee Lee

Remarkable progress has been made in object instance detection and segmentation in recent years. However, existing state-of-the-art methods are mostly evaluated with fairly balanced and class-limited benchmarks, such as Microsoft COCO…

Computer Vision and Pattern Recognition · Computer Science 2020-08-03 Tao Wang , Yu Li , Bingyi Kang , Junnan Li , Jun Hao Liew , Sheng Tang , Steven Hoi , Jiashi Feng

We propose a deep learning-based feature fusion approach for facial computing including face recognition as well as gender, race and age detection. Instead of training a single classifier on face images to classify them based on the…

Computer Vision and Pattern Recognition · Computer Science 2016-10-17 Wei Li , Zhigang Zhu

Real world data often exhibits a long-tailed and open-ended (with unseen classes) distribution. A practical recognition system must balance between majority (head) and minority (tail) classes, generalize across the distribution, and…

Computer Vision and Pattern Recognition · Computer Science 2022-08-18 Ziwei Liu , Zhongqi Miao , Xiaohang Zhan , Jiayun Wang , Boqing Gong , Stella X. Yu

Recently, long-tailed image classification harvests lots of research attention, since the data distribution is long-tailed in many real-world situations. Piles of algorithms are devised to address the data imbalance problem by biasing the…

Computer Vision and Pattern Recognition · Computer Science 2023-02-06 Chaowei Fang , Dingwen Zhang , Wen Zheng , Xue Li , Le Yang , Lechao Cheng , Junwei Han

Long-tailed recognition suffers from a persistent head--tail trade-off: improving tail performance often degrades head accuracy and can increase training instability. Despite strong empirical results from re-weighting, decoupled training,…

Machine Learning · Computer Science 2026-05-26 Chang Chu , Qingyue Zhang , Shao-Lun Huang , Junxiong Zheng

Domain Generalization (DG) seeks to train models that perform reliably on unseen target domains without access to target data during training. While recent progress in smoothing the loss landscape has improved generalization, existing…

Artificial Intelligence · Computer Science 2025-06-11 Sunny Gupta , Nikita Jangid , Shounak Das , Amit Sethi

Deep classifiers have achieved great success in visual recognition. However, real-world data is long-tailed by nature, leading to the mismatch between training and testing distributions. In this paper, we show that the Softmax function,…

Machine Learning · Computer Science 2020-11-24 Jiawei Ren , Cunjun Yu , Shunan Sheng , Xiao Ma , Haiyu Zhao , Shuai Yi , Hongsheng Li

Object detection has been widely explored for class-balanced datasets such as COCO. However, real-world scenarios introduce the challenge of long-tailed distributions, where numerous categories contain only a few instances. This inherent…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Satyam Gaba

Federated learning (FL) provides a decentralized machine learning paradigm where a server collaborates with a group of clients to learn a global model without accessing the clients' data. User heterogeneity is a significant challenge for…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Jiangming Shi , Shanshan Zheng , Xiangbo Yin , Yang Lu , Yuan Xie , Yanyun Qu

Deep learning-based models encounter challenges when processing long-tailed data in the real world. Existing solutions usually employ some balancing strategies or transfer learning to deal with the class imbalance problem, based on the…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Changyao Tian , Wenhai Wang , Xizhou Zhu , Jifeng Dai , Yu Qiao
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