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Graph Convolutional Networks (GCNs) has demonstrated promising results for recommender systems, as they can effectively leverage high-order relationship. However, these methods usually encounter data sparsity issue in real-world scenarios.…

信息检索 · 计算机科学 2023-09-21 Qian Zhao , Zhengwei Wu , Zhiqiang Zhang , Jun Zhou

Conventional detectors suffer from performance degradation when dealing with long-tailed data due to a classification bias towards the majority head categories. In this paper, we contend that the learning bias originates from two factors:…

计算机视觉与模式识别 · 计算机科学 2023-08-07 Tianhao Qi , Hongtao Xie , Pandeng Li , Jiannan Ge , Yongdong Zhang

While modern visual recognition systems have made significant advancements, many continue to struggle with the open problem of learning from few exemplars. This paper focuses on the task of object detection in the setting where object…

计算机视觉与模式识别 · 计算机科学 2025-06-10 Phi Vu Tran

Real-world data often follows a long-tailed distribution, where a few head classes occupy most of the data and a large number of tail classes only contain very limited samples. In practice, deep models often show poor generalization…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Haolin Pan , Yong Guo , Mianjie Yu , Jian Chen

Long-tailed data is still a big challenge for deep neural networks, even though they have achieved great success on balanced data. We observe that vanilla training on long-tailed data with cross-entropy loss makes the instance-rich head…

计算机视觉与模式识别 · 计算机科学 2023-05-22 Mengke Li , Yiu-ming Cheung , Yang Lu

Out-of-distribution (OOD) detection is crucial for deploying robust machine learning models. However, when training data follows a long-tailed distribution, the model's ability to accurately detect OOD samples is significantly compromised,…

机器学习 · 计算机科学 2025-09-26 Shuai Feng , Yuxin Ge , Yuntao Du , Mingcai Chen , Chongjun Wang , Lei Feng

Existing long-tailed recognition methods, aiming to train class-balanced models from long-tailed data, generally assume the models would be evaluated on the uniform test class distribution. However, practical test class distributions often…

计算机视觉与模式识别 · 计算机科学 2022-10-28 Yifan Zhang , Bryan Hooi , Lanqing Hong , Jiashi Feng

Deep long-tailed learning, one of the most challenging problems in visual recognition, aims to train well-performing deep models from a large number of images that follow a long-tailed class distribution. In the last decade, deep learning…

计算机视觉与模式识别 · 计算机科学 2023-04-18 Yifan Zhang , Bingyi Kang , Bryan Hooi , Shuicheng Yan , Jiashi Feng

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…

计算机视觉与模式识别 · 计算机科学 2016-11-29 Xiao Zhang , Zhiyuan Fang , Yandong Wen , Zhifeng Li , Yu Qiao

In the real-world setting, data often follows a long-tailed distribution, where head classes contain significantly more training samples than tail classes. Consequently, models trained on such data tend to be biased toward head classes. The…

计算机视觉与模式识别 · 计算机科学 2024-03-15 Fan Zhang , Wei Qin , Weijieying Ren , Lei Wang , Zetong Chen , Richang Hong

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…

机器学习 · 计算机科学 2025-04-08 Yujia Su , Xinjie Li , Lionel Z. Wang

Long-tailed semi-supervised learning (LTSSL) represents a practical scenario for semi-supervised applications, challenged by skewed labeled distributions that bias classifiers. This problem is often aggravated by discrepancies between…

机器学习 · 计算机科学 2024-07-16 Emanuel Sanchez Aimar , Nathaniel Helgesen , Yonghao Xu , Marco Kuhlmann , Michael Felsberg

Machine learning models fail to perform well on real-world applications when 1) the category distribution P(Y) of the training dataset suffers from long-tailed distribution and 2) the test data is drawn from different conditional…

计算机视觉与模式识别 · 计算机科学 2022-07-22 Xiao Gu , Yao Guo , Zeju Li , Jianing Qiu , Qi Dou , Yuxuan Liu , Benny Lo , Guang-Zhong Yang

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…

计算机视觉与模式识别 · 计算机科学 2024-09-16 Qihao Zhao , Yalun Dai , Shen Lin , Wei Hu , Fan Zhang , Jun Liu

Compositional Zero-Shot Learning (CZSL) aims to transfer knowledge from seen state-object pairs to novel unseen pairs. In this process, visual bias caused by the diverse interrelationship of state-object combinations blurs their visual…

计算机视觉与模式识别 · 计算机科学 2023-12-27 Chenyi Jiang , Haofeng Zhang

Most existing object instance detection and segmentation models only work well on fairly balanced benchmarks where per-category training sample numbers are comparable, such as COCO. They tend to suffer performance drop on realistic datasets…

计算机视觉与模式识别 · 计算机科学 2020-11-04 Tao Wang , Yu Li , Bingyi Kang , Junnan Li , Junhao Liew , Sheng Tang , Steven Hoi , Jiashi Feng

Training on datasets with long-tailed distributions has been challenging for major recognition tasks such as classification and detection. To deal with this challenge, image resampling is typically introduced as a simple but effective…

计算机视觉与模式识别 · 计算机科学 2021-10-20 Nadine Chang , Zhiding Yu , Yu-Xiong Wang , Anima Anandkumar , Sanja Fidler , Jose M. Alvarez

Most existing methods that cope with noisy labels usually assume that the class distributions are well balanced, which has insufficient capacity to deal with the practical scenarios where training samples have imbalanced distributions. To…

计算机视觉与模式识别 · 计算机科学 2022-09-27 Chaowei Fang , Lechao Cheng , Huiyan Qi , Dingwen Zhang

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…

计算机视觉与模式识别 · 计算机科学 2024-06-05 Sanglee Park , Seung-won Hwang , Jungmin So

The visual world naturally exhibits an imbalance in the number of object or scene instances resulting in a \emph{long-tailed distribution}. This imbalance poses significant challenges for classification models based on deep learning.…

计算机视觉与模式识别 · 计算机科学 2021-11-12 Rahul Vigneswaran , Marc T. Law , Vineeth N. Balasubramanian , Makarand Tapaswi