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Deep learning has achieved remarkable progress for visual recognition on large-scale balanced datasets but still performs poorly on real-world long-tailed data. Previous methods often adopt class re-balanced training strategies to…

Computer Vision and Pattern Recognition · Computer Science 2021-09-10 Tianhao Li , Limin Wang , Gangshan Wu

Data in real-world object detection often exhibits the long-tailed distribution. Existing solutions tackle this problem by mitigating the competition between the head and tail categories. However, due to the scarcity of training samples,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Bo Li , Yongqiang Yao , Jingru Tan , Xin Lu , Fengwei Yu , Ye Luo , Jianwei Lu

In this work, we address the challenging task of long-tailed image recognition. Previous long-tailed recognition methods commonly focus on the data augmentation or re-balancing strategy of the tail classes to give more attention to tail…

Computer Vision and Pattern Recognition · Computer Science 2022-09-13 Weide Liu , Zhonghua Wu , Yiming Wang , Henghui Ding , Fayao Liu , Jie Lin , Guosheng Lin

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

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

Real-world data is extremely imbalanced and presents a long-tailed distribution, resulting in models that are biased towards classes with sufficient samples and perform poorly on rare classes. Recent methods propose to rebalance classes but…

Computer Vision and Pattern Recognition · Computer Science 2023-11-02 Weiqi Li , Fan Lyu , Fanhua Shang , Liang Wan , Wei Feng

Despite the recent success of deep neural networks, it remains challenging to effectively model the long-tail class distribution in visual recognition tasks. To address this problem, we first investigate the performance bottleneck of the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Songyang Zhang , Zeming Li , Shipeng Yan , Xuming He , Jian Sun

Data in the real world tends to exhibit a long-tailed label distribution, which poses great challenges for the training of neural networks in visual recognition. Existing methods tackle this problem mainly from the perspective of data…

Computer Vision and Pattern Recognition · Computer Science 2021-09-24 Yan Zhao , Weicong Chen , Xu Tan , Kai Huang , Jihong Zhu

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

The imbalance (or long-tail) is the nature of many real-world data distributions, which often induces the undesirable bias of deep classification models toward frequent classes, resulting in poor performance for tail classes. In this paper,…

Machine Learning · Computer Science 2025-10-13 Fudong Lin , Xu Yuan

The imbalanced distribution of long-tailed data presents a considerable challenge for deep learning models, as it causes them to prioritize the accurate classification of head classes but largely disregard tail classes. The biased decision…

Computer Vision and Pattern Recognition · Computer Science 2025-06-06 Mengke Li , Zhikai Hu , Yang Lu , Weichao Lan , Yiu-ming Cheung , Hui Huang

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

In real-world scenarios, where knowledge distributions exhibit long-tail. Humans manage to master knowledge uniformly across imbalanced distributions, a feat attributed to their diligent practices of reviewing, summarizing, and correcting…

Computer Vision and Pattern Recognition · Computer Science 2024-09-16 Qihao Zhao , Yalun Dai , Shen Lin , Wei Hu , Fan Zhang , Jun Liu

Long-tailed data is prevalent in real-world classification tasks and heavily relies on supervised information, which makes the annotation process exceptionally labor-intensive and time-consuming. Unfortunately, despite being a common…

Machine Learning · Computer Science 2024-12-04 Meng Wei , Zhongnian Li , Yong Zhou , Xinzheng Xu

In real-world scenarios, collected and annotated data often exhibit the characteristics of multiple classes and long-tailed distribution. Additionally, label noise is inevitable in large-scale annotations and hinders the applications of…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Chao Liang , Zongxin Yang , Linchao Zhu , Yi Yang

Real-world data often have a long-tailed distribution, where the number of samples per class is not equal over training classes. The imbalanced data form a biased feature space, which deteriorates the performance of the recognition model.…

Computer Vision and Pattern Recognition · Computer Science 2022-11-23 Minki Jeong , Changick Kim

Label distributions in real-world are oftentimes long-tailed and imbalanced, resulting in biased models towards dominant labels. While long-tailed recognition has been extensively studied for image classification tasks, limited effort has…

Computer Vision and Pattern Recognition · Computer Science 2021-08-19 Xing Zhang , Zuxuan Wu , Zejia Weng , Huazhu Fu , Jingjing Chen , Yu-Gang Jiang , Larry Davis

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…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Chengkai Hou , Jieyu Zhang , Haonan Wang , Tianyi Zhou

Most existing state-of-the-art video classification methods assume that the training data obey a uniform distribution. However, video data in the real world typically exhibit an imbalanced long-tailed class distribution, resulting in a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-06 Yufan Hu , Junyu Gao , Changsheng Xu

Real-world data often follow a long-tailed distribution with a high imbalance in the number of samples between classes. The problem with training from imbalanced data is that some background features, common to all classes, can be…

Computer Vision and Pattern Recognition · Computer Science 2024-06-05 Sanglee Park , Seung-won Hwang , Jungmin So