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Today, scene graph generation(SGG) task is largely limited in realistic scenarios, mainly due to the extremely long-tailed bias of predicate annotation distribution. Thus, tackling the class imbalance trouble of SGG is critical and…

Computer Vision and Pattern Recognition · Computer Science 2020-09-03 Shaotian Yan , Chen Shen , Zhongming Jin , Jianqiang Huang , Rongxin Jiang , Yaowu Chen , Xian-Sheng Hua

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

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

Data is the foundation for the development of computer vision, and the establishment of datasets plays an important role in advancing the techniques of fine-grained visual categorization~(FGVC). In the existing FGVC datasets used in…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Shuo Ye , Shiming Chen , Ruxin Wang , Tianxu Wu , Jiamiao Xu , Salman Khan , Fahad Shahbaz Khan , Ling Shao

We propose a simple data model inspired from natural data such as text or images, and use it to study the importance of learning features in order to achieve good generalization. Our data model follows a long-tailed distribution in the…

Machine Learning · Computer Science 2023-01-02 Thomas Laurent , James H. von Brecht , Xavier Bresson

The long-tailed class distribution in visual recognition tasks poses great challenges for neural networks on how to handle the biased predictions between head and tail classes, i.e., the model tends to classify tail classes as head classes.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Yidong Wang , Bowen Zhang , Wenxin Hou , Zhen Wu , Jindong Wang , Takahiro Shinozaki

To address the problem of long-tail distribution for the large vocabulary object detection task, existing methods usually divide the whole categories into several groups and treat each group with different strategies. These methods bring…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Tong Wang , Yousong Zhu , Chaoyang Zhao , Wei Zeng , Jinqiao Wang , Ming Tang

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

It is difficult to anticipate the myriad challenges that a predictive model will encounter once deployed. Common practice entails a reactive, cyclical approach: model deployment, data mining, and retraining. We instead develop a proactive…

The distribution of data in the world (eg, internet, etc.) significantly differs from the well-curated datasets and is often over-populated with samples from common categories. The algorithms designed for well-curated datasets perform…

Machine Learning · Computer Science 2025-07-30 Harsh Rangwani

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

Real-world large-scale datasets are both noisily labeled and class-imbalanced. The issues seriously hurt the generalization of trained models. It is hence significant to address the simultaneous incorrect labeling and class-imbalance, i.e.,…

Machine Learning · Computer Science 2023-11-08 Manyi Zhang , Xuyang Zhao , Jun Yao , Chun Yuan , Weiran Huang

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

Despite the fast progress of deep learning, one standing challenge is the gap of the observed training samples and the underlying true distribution. There are multiple reasons for the causing of this gap e.g. sampling bias, noise etc. In…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Yanbiao Ma , Wei Dai , Bowei Liu , Jiayi Chen , Wenke Huang , Guancheng Wan , Zhiwu Lu , Junchi Yan

The training datasets used in long-tailed recognition are extremely unbalanced, resulting in significant variation in per-class accuracy across categories. Prior works mostly used average accuracy to evaluate their algorithms, which easily…

Computer Vision and Pattern Recognition · Computer Science 2024-01-31 Hao Yu , Yingxiao Du , Jianxin Wu

Data in the real-world classification problems are always imbalanced or long-tailed, wherein the majority classes have the most of the samples that dominate the model training. In such setting, the naive model tends to have poor performance…

Machine Learning · Computer Science 2023-08-30 Hong Zhu , Runpeng Yu , Xing Tang , Yifei Wang , Yuan Fang , Yisen Wang

Instance segmentation has witnessed a remarkable progress on class-balanced benchmarks. However, they fail to perform as accurately in real-world scenarios, where the category distribution of objects naturally comes with a long tail.…

Computer Vision and Pattern Recognition · Computer Science 2021-06-18 Jiaqi Wang , Wenwei Zhang , Yuhang Zang , Yuhang Cao , Jiangmiao Pang , Tao Gong , Kai Chen , Ziwei Liu , Chen Change Loy , Dahua Lin

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

Anomaly detection is crucial in industrial applications for identifying rare and unseen patterns to ensure system reliability. Traditional models, trained on a single class of normal data, struggle with real-world distributions where normal…

Machine Learning · Statistics 2026-01-07 Jungi Lee , Jungkwon Kim , Chi Zhang , Sangmin Kim , Kwangsun Yoo , Seok-Joo Byun
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