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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

In the long-tailed recognition field, the Decoupled Training paradigm has demonstrated remarkable capabilities among various methods. This paradigm decouples the training process into separate representation learning and classifier…

Computer Vision and Pattern Recognition · Computer Science 2024-03-04 Han Lu , Siyu Sun , Yichen Xie , Liqing Zhang , Xiaokang Yang , Junchi Yan

Camera traps, unmanned observation devices, and deep learning-based image recognition systems have greatly reduced human effort in collecting and analyzing wildlife images. However, data collected via above apparatus exhibits 1) long-tailed…

Computer Vision and Pattern Recognition · Computer Science 2022-09-01 Jeongsoo Kim , Sangmin Woo , Byeongjun Park , Changick Kim

Long-tailed classification poses a challenge due to its heavy imbalance in class probabilities and tail-sensitivity risks with asymmetric misprediction costs. Recent attempts have used re-balancing loss and ensemble methods, but they are…

Machine Learning · Computer Science 2023-03-22 Bolian Li , Ruqi Zhang

Real-world training data usually exhibits long-tailed distribution, where several majority classes have a significantly larger number of samples than the remaining minority classes. This imbalance degrades the performance of typical…

Computer Vision and Pattern Recognition · Computer Science 2021-04-08 Shuang Li , Kaixiong Gong , Chi Harold Liu , Yulin Wang , Feng Qiao , Xinjing Cheng

Ensuring robust performance on long-tail examples is an important problem for many real-world applications of machine learning, such as autonomous driving. This work focuses on the problem of identifying rare examples within a corpus of…

Computer Vision and Pattern Recognition · Computer Science 2024-09-25 Mao Ye , Gregory P. Meyer , Zaiwei Zhang , Dennis Park , Siva Karthik Mustikovela , Yuning Chai , Eric M Wolff

Object recognition techniques using convolutional neural networks (CNN) have achieved great success. However, state-of-the-art object detection methods still perform poorly on large vocabulary and long-tailed datasets, e.g. LVIS. In this…

Computer Vision and Pattern Recognition · Computer Science 2020-04-15 Jingru Tan , Changbao Wang , Buyu Li , Quanquan Li , Wanli Ouyang , Changqing Yin , Junjie Yan

Data privacy and class imbalance are the norm rather than the exception in many machine learning tasks. Recent attempts have been launched to, on one side, address the problem of learning from pervasive private data, and on the other side,…

Machine Learning · Computer Science 2022-07-01 Zihan Chen , Songshang Liu , Hualiang Wang , Howard H. Yang , Tony Q. S. Quek , Zuozhu Liu

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

A dramatic increase in real-world video volume with extremely diverse and emerging topics naturally forms a long-tailed video distribution in terms of their categories, and it spotlights the need for Video Long-Tailed Recognition (VLTR). In…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 WonJun Moon , Hyun Seok Seong , Jae-Pil Heo

Supervised Contrastive Loss (SCL) is popular in visual representation learning. Given an anchor image, SCL pulls two types of positive samples, i.e., its augmentation and other images from the same class together, while pushes negative…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Shiyu Xuan , Shiliang Zhang

Large-scale object detection and instance segmentation face a severe data imbalance. The finer-grained object classes become, the less frequent they appear in our datasets. However, at test-time, we expect a detector that performs well for…

Computer Vision and Pattern Recognition · Computer Science 2023-01-25 Jang Hyun Cho , Philipp Krähenbühl

The generalization gap on the long-tailed data sets is largely owing to most categories only occupying a few training samples. Decoupled training achieves better performance by training backbone and classifier separately. What causes the…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Zhiwei Zhang

In medical contexts, the imbalanced data distribution in long-tailed datasets, due to scarce labels for rare diseases, greatly impairs the diagnostic accuracy of deep learning models. Recent multimodal text-image supervised foundation…

Computer Vision and Pattern Recognition · Computer Science 2024-08-28 Sirui Li , Li Lin , Yijin Huang , Pujin Cheng , Xiaoying Tang

One of the most profound challenges of modern machine learning is performing well on the long-tail of rare and underrepresented features. Large general-purpose models are trained for many tasks, but work best on high-frequency use cases.…

Computation and Language · Computer Science 2025-06-18 Daniel D'souza , Julia Kreutzer , Adrien Morisot , Ahmet Üstün , Sara Hooker

Real-world classification problems typically exhibit an imbalanced or long-tailed label distribution, wherein many labels are associated with only a few samples. This poses a challenge for generalisation on such labels, and also makes…

Machine Learning · Computer Science 2021-07-13 Aditya Krishna Menon , Sadeep Jayasumana , Ankit Singh Rawat , Himanshu Jain , Andreas Veit , Sanjiv Kumar

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…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Xiao Gu , Yao Guo , Zeju Li , Jianing Qiu , Qi Dou , Yuxuan Liu , Benny Lo , Guang-Zhong Yang

Class-incremental learning is dedicated to the development of deep learning models that are capable of acquiring new knowledge while retaining previously learned information. Most methods focus on balanced data distribution for each task,…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Linjie Li , Zhenyu Wu , Jiaming Liu , Yang Ji

Scene Graph Generation (SGG) as a critical task in image understanding, facing the challenge of head-biased prediction caused by the long-tail distribution of predicates. However, current unbiased SGG methods can easily prioritize improving…

Computer Vision and Pattern Recognition · Computer Science 2023-08-24 Lei Wang , Zejian Yuan , Yao Lu , Badong Chen

Recognizing driving behaviors is important for downstream tasks such as reasoning, planning, and navigation. Existing video recognition approaches work well for common behaviors (e.g. "drive straight", "brake", "turn left/right"). However,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-10 Chirag Parikh , Ravi Shankar Mishra , Rohan Chandra , Ravi Kiran Sarvadevabhatla