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A common approach to transfer learning under distribution shift is to fine-tune the last few layers of a pre-trained model, preserving learned features while also adapting to the new task. This paper shows that in such settings, selectively…

Machine Learning · Computer Science 2023-06-07 Yoonho Lee , Annie S. Chen , Fahim Tajwar , Ananya Kumar , Huaxiu Yao , Percy Liang , Chelsea Finn

Real-world datasets often exhibit long-tailed distributions, where a few dominant "Head" classes have abundant samples while most "Tail" classes are severely underrepresented, leading to biased learning and poor generalization for the Tail.…

Machine Learning · Computer Science 2026-02-02 Mahdiyar Molahasani , Michael Greenspan , Ali Etemad

Deep learning-based food recognition has made significant progress in predicting food types from eating occasion images. However, two key challenges hinder real-world deployment: (1) continuously learning new food classes without forgetting…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Jiangpeng He , Xiaoyan Zhang , Luotao Lin , Jack Ma , Heather A. Eicher-Miller , Fengqing Zhu

In the real world, medical datasets often exhibit a long-tailed data distribution (i.e., a few classes occupy most of the data, while most classes have rarely few samples), which results in a challenging imbalance learning scenario. For…

Computer Vision and Pattern Recognition · Computer Science 2021-04-23 Lie Ju , Xin Wang , Lin Wang , Tongliang Liu , Xin Zhao , Tom Drummond , Dwarikanath Mahapatra , Zongyuan Ge

Taxonomic classification of ecological families, genera, and species underpins biodiversity monitoring and conservation. Existing computer vision methods typically address fine-grained recognition and long-tailed learning in isolation.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Cheng Yaw Low , Heejoon Koo , Jaewoo Park , Meeyoung Cha

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

Most of the medical tasks naturally exhibit a long-tailed distribution due to the complex patient-level conditions and the existence of rare diseases. Existing long-tailed learning methods usually treat each class equally to re-balance the…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Lie Ju , Yicheng Wu , Lin Wang , Zhen Yu , Xin Zhao , Xin Wang , Paul Bonnington , Zongyuan Ge

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

Recognition problems in long-tailed data, in which the sample size per class is heavily skewed, have gained importance because the distribution of the sample size per class in a dataset is generally exponential unless the sample size is…

Machine Learning · Computer Science 2024-04-30 Naoya Hasegawa , Issei Sato

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…

Computer Vision and Pattern Recognition · Computer Science 2023-05-22 Mengke Li , Yiu-ming Cheung , Yang Lu

There has been significant progress in creating machine learning models that identify objects in scenes along with their associated attributes and relationships; however, there is a large gap between the best models and human capabilities.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Tyler L. Hayes , Maximilian Nickel , Christopher Kanan , Ludovic Denoyer , Arthur Szlam

Real-world datasets often follow a long-tailed distribution, making generalization to tail classes difficult. Recent methods resorted to long-tail variants of Sharpness-Aware Minimization (SAM), such as ImbSAM and CC-SAM, to improve…

Machine Learning · Computer Science 2025-06-04 Sicong Li , Qianqian Xu , Zhiyong Yang , Zitai Wang , Linchao Zhang , Xiaochun Cao , Qingming Huang

Vision-language models (VLMs) excel in zero-shot recognition but their performance varies greatly across different visual concepts. For example, although CLIP achieves impressive accuracy on ImageNet (60-80%), its performance drops below…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Shubham Parashar , Zhiqiu Lin , Tian Liu , Xiangjue Dong , Yanan Li , Deva Ramanan , James Caverlee , Shu Kong

Our work focuses on tackling the challenging but natural visual recognition task of long-tailed data distribution (i.e., a few classes occupy most of the data, while most classes have rarely few samples). In the literature, class…

Computer Vision and Pattern Recognition · Computer Science 2020-03-11 Boyan Zhou , Quan Cui , Xiu-Shen Wei , Zhao-Min Chen

Real-world data is often unbalanced and long-tailed, but deep models struggle to recognize rare classes in the presence of frequent classes. To address unbalanced data, most studies try balancing the data, the loss, or the classifier to…

Machine Learning · Computer Science 2021-11-02 Dvir Samuel , Gal Chechik

Federated Learning (FL) enables collaborative model training across decentralized clients without sharing private data. However, FL suffers from biased global models due to non-IID and long-tail data distributions. We propose…

Machine Learning · Computer Science 2026-01-08 Jingrui Zhang , Yimeng Xu , Shujie Li , Feng Liang , Haihan Duan , Yanjie Dong , Victor C. M. Leung , Xiping Hu

In this work, we benchmark with different backbones and study their impact for self-supervised learning (SSL) as an auxiliary task to blend texture-based local descriptors into feature modelling for efficient face analysis. It is…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Shukesh Reddy , Abhijit Das

Real-world data often follow a long-tailed distribution as the frequency of each class is typically different. For example, a dataset can have a large number of under-represented classes and a few classes with more than sufficient data.…

Computer Vision and Pattern Recognition · Computer Science 2020-08-11 Peng Chu , Xiao Bian , Shaopeng Liu , Haibin Ling

Learning discriminative image representations plays a vital role in long-tailed image classification because it can ease the classifier learning in imbalanced cases. Given the promising performance contrastive learning has shown recently in…

Computer Vision and Pattern Recognition · Computer Science 2021-03-29 Peng Wang , Kai Han , Xiu-Shen Wei , Lei Zhang , Lei Wang

We present an approach for adapting convolutional neural networks for object recognition and classification to scientific literature layout detection (SLLD), a shared subtask of several information extraction problems. Scientific…

Computer Vision and Pattern Recognition · Computer Science 2020-10-23 Huichen Yang , William H. Hsu