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The natural world often follows a long-tailed data distribution where only a few classes account for most of the examples. This long-tail causes classifiers to overfit to the majority class. To mitigate this, prior solutions commonly adopt…

Machine Learning · Computer Science 2020-09-15 Rahul Duggal , Scott Freitas , Sunny Dhamnani , Duen Horng Chau , Jimeng Sun

While the novel class discovery has recently made great progress, existing methods typically focus on improving algorithms on class-balanced benchmarks. However, in real-world recognition tasks, the class distributions of their…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Chuyu Zhang , Ruijie Xu , Xuming He

Long-tail recognition tackles the natural non-uniformly distributed data in real-world scenarios. While modern classifiers perform well on populated classes, its performance degrades significantly on tail classes. Humans, however, are less…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Tz-Ying Wu , Pedro Morgado , Pei Wang , Chih-Hui Ho , Nuno Vasconcelos

Dataset distillation aims to synthesize a small, information-rich dataset from a large one for efficient model training. However, existing dataset distillation methods struggle with long-tailed datasets, which are prevalent in real-world…

Machine Learning · Computer Science 2025-03-20 Zhenghao Zhao , Haoxuan Wang , Yuzhang Shang , Kai Wang , Yan Yan

Practical natural language processing (NLP) tasks are commonly long-tailed with noisy labels. Those problems challenge the generalization and robustness of complex models such as Deep Neural Networks (DNNs). Some commonly used resampling…

Computation and Language · Computer Science 2023-05-04 Sunyi Chi , Bo Dong , Yiming Xu , Zhenyu Shi , Zheng Du

Convolutional neural networks have achieved great improvement on face recognition in recent years because of its extraordinary ability in learning discriminative features of people with different identities. To train such a well-designed…

Computer Vision and Pattern Recognition · Computer Science 2016-11-29 Xiao Zhang , Zhiyuan Fang , Yandong Wen , Zhifeng Li , Yu Qiao

In the real world, long-tailed data distributions are prevalent, making it challenging for models to effectively learn and classify tail classes. However, we discover that in the field of drug chemistry, certain tail classes exhibit higher…

Machine Learning · Computer Science 2025-04-08 Yujia Su , Xinjie Li , Lionel Z. Wang

This paper proposes a new pipeline for long-tail (LT) recognition. Instead of re-weighting or re-sampling, we utilize the long-tailed dataset itself to generate a balanced proxy that can be optimized through cross-entropy (CE).…

Computer Vision and Pattern Recognition · Computer Science 2024-03-11 Jie Shao , Ke Zhu , Hanxiao Zhang , Jianxin Wu

Significant effort has been recently devoted to modeling visual relations. This has mostly addressed the design of architectures, typically by adding parameters and increasing model complexity. However, visual relation learning is a…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Alakh Desai , Tz-Ying Wu , Subarna Tripathi , Nuno Vasconcelos

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

Deep neural networks are highly effective when a large number of labeled samples are available but fail with few-shot classification tasks. Recently, meta-learning methods have received much attention, which train a meta-learner on massive…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Yucan Zhou , Yu Wang , Jianfei Cai , Yu Zhou , Qinghua Hu , Weiping Wang

Long-tailed data is a special type of multi-class imbalanced data with a very large amount of minority/tail classes that have a very significant combined influence. Long-tailed learning aims to build high-performance models on datasets with…

Machine Learning · Computer Science 2024-08-02 Chongsheng Zhang , George Almpanidis , Gaojuan Fan , Binquan Deng , Yanbo Zhang , Ji Liu , Aouaidjia Kamel , Paolo Soda , João Gama

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

In the context of long-tail classification on graphs, the vast majority of existing work primarily revolves around the development of model debiasing strategies, intending to mitigate class imbalances and enhance the overall performance.…

Machine Learning · Computer Science 2024-06-03 Haohui Wang , Baoyu Jing , Kaize Ding , Yada Zhu , Wei Cheng , Si Zhang , Yonghui Fan , Liqing Zhang , Dawei Zhou

Curriculum learning strategies in prior multi-task learning approaches arrange datasets in a difficulty hierarchy either based on human perception or by exhaustively searching the optimal arrangement. However, human perception of difficulty…

Machine Learning · Computer Science 2022-05-30 Neeraj Varshney , Swaroop Mishra , Chitta Baral

We propose a distance supervised relation extraction approach for long-tailed, imbalanced data which is prevalent in real-world settings. Here, the challenge is to learn accurate "few-shot" models for classes existing at the tail of the…

Information Retrieval · Computer Science 2023-01-26 Ningyu Zhang , Shumin Deng , Zhanlin Sun , Guanying Wang , Xi Chen , Wei Zhang , Huajun Chen

Active learning aims to reduce the labeling effort that is required to train algorithms by learning an acquisition function selecting the most relevant data for which a label should be requested from a large unlabeled data pool. Active…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Javad Zolfaghari Bengar , Joost van de Weijer , Laura Lopez Fuentes , Bogdan Raducanu

Real-world data are long-tailed, the lack of tail samples leads to a significant limitation in the generalization ability of the model. Although numerous approaches of class re-balancing perform well for moderate class imbalance problems,…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Yanbiao Ma , Licheng Jiao , Fang Liu , Shuyuan Yang , Xu Liu , Puhua Chen

As the data scale grows, deep recognition models often suffer from long-tailed data distributions due to the heavy imbalanced sample number across categories. Indeed, real-world data usually exhibit some similarity relation among different…

Computer Vision and Pattern Recognition · Computer Science 2022-08-18 Lei Liu , Li Liu

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