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Related papers: Addressing the Real-world Class Imbalance Problem …

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Class imbalance is prevalent in real-world node classification tasks and poses great challenges for graph learning models. Most existing studies are rooted in a class-rebalancing (CR) perspective and address class imbalance with class-wise…

Machine Learning · Computer Science 2024-05-21 Zhining Liu , Ruizhong Qiu , Zhichen Zeng , Hyunsik Yoo , David Zhou , Zhe Xu , Yada Zhu , Kommy Weldemariam , Jingrui He , Hanghang Tong

This paper aims to evaluate the suitability of current deep learning methods for clinical workflow especially by focusing on dermatology. Although deep learning methods have been attempted to get dermatologist level accuracy in several…

Computer Vision and Pattern Recognition · Computer Science 2020-03-18 Sourav Mishra , Subhajit Chaudhury , Hideaki Imaizumi , Toshihiko Yamasaki

Skin image datasets often suffer from imbalanced data distribution, exacerbating the difficulty of computer-aided skin disease diagnosis. Some recent works exploit supervised contrastive learning (SCL) for this long-tailed challenge.…

Computer Vision and Pattern Recognition · Computer Science 2023-07-11 Yilan Zhang , Jianqi Chen , Ke Wang , Fengying Xie

Automated retinal disease diagnosis is vital given the rising prevalence of conditions such as diabetic retinopathy and macular degeneration. Conventional deep learning approaches require large annotated datasets, which are costly and often…

Computer Vision and Pattern Recognition · Computer Science 2025-12-19 Jasmaine Khale , Ravi Prakash Srivastava

The long-tail distribution of the visual world poses great challenges for deep learning based classification models on how to handle the class imbalance problem. Existing solutions usually involve class-balancing strategies, e.g., by loss…

Computer Vision and Pattern Recognition · Computer Science 2020-02-20 Bingyi Kang , Saining Xie , Marcus Rohrbach , Zhicheng Yan , Albert Gordo , Jiashi Feng , Yannis Kalantidis

Class imbalance problems widely exist in the medical field and heavily deteriorates performance of clinical predictive models. Most techniques to alleviate the problem rebalance class proportions and they predominantly assume the rebalanced…

Machine Learning · Computer Science 2023-05-11 Yinan Liu , Xinyu Dong , Weimin Lyu , Richard N. Rosenthal , Rachel Wong , Tengfei Ma , Fusheng Wang

Class imbalance is a common problem in the case of real-world object detection and classification tasks. Data of some classes is abundant making them an over-represented majority, and data of other classes is scarce, making them an…

Computer Vision and Pattern Recognition · Computer Science 2017-03-24 Salman H. Khan , Munawar Hayat , Mohammed Bennamoun , Ferdous Sohel , Roberto Togneri

Machine learning (ML) models have difficulty generalizing when the number of training class instances are numerically imbalanced. The problem of generalization in the face of data imbalance has largely been attributed to the lack of…

Machine Learning · Computer Science 2024-07-16 Damien A. Dablain , Nitesh V. Chawla

Data for face analysis often exhibit highly-skewed class distribution, i.e., most data belong to a few majority classes, while the minority classes only contain a scarce amount of instances. To mitigate this issue, contemporary deep…

Computer Vision and Pattern Recognition · Computer Science 2019-05-01 Chen Huang , Yining Li , Chen Change Loy , Xiaoou Tang

Although few-shot learning and one-class classification (OCC), i.e., learning a binary classifier with data from only one class, have been separately well studied, their intersection remains rather unexplored. Our work addresses the…

Machine Learning · Computer Science 2021-02-12 Ahmed Frikha , Denis Krompaß , Hans-Georg Köpken , Volker Tresp

Few-shot learning aims at leveraging knowledge learned by one or more deep learning models, in order to obtain good classification performance on new problems, where only a few labeled samples per class are available. Recent years have seen…

Machine Learning · Computer Science 2022-02-08 Yassir Bendou , Yuqing Hu , Raphael Lafargue , Giulia Lioi , Bastien Pasdeloup , Stéphane Pateux , Vincent Gripon

Skin disease classification from images is crucial to dermatological diagnosis. However, identifying skin lesions involves a variety of aspects in terms of size, color, shape, and texture. To make matters worse, many categories only contain…

Image and Video Processing · Electrical Eng. & Systems 2020-04-22 Wei Zhu , Haofu Liao , Wenbin Li , Weijian Li , Jiebo Luo

Despite extensive research spanning several decades, class imbalance is still considered a profound difficulty for both machine learning and deep learning models. While data oversampling is the foremost technique to address this issue,…

Machine Learning · Computer Science 2025-02-12 Sukumar Kishanthan , Asela Hevapathige

For over two decades, detecting rare events has been a challenging task among researchers in the data mining and machine learning domain. Real-life problems inspire researchers to navigate and further improve data processing and algorithmic…

Machine Learning · Computer Science 2025-09-09 Elaheh Jafarigol , Theodore Trafalis , Neshat Mohammadi

Deep Learning approaches in dermatological image classification have shown promising results, yet the field faces significant methodological challenges that impede proper evaluation. This paper presents a dual contribution: first, a…

Image and Video Processing · Electrical Eng. & Systems 2025-02-05 Łukasz Miętkiewicz , Leon Ciechanowski , Dariusz Jemielniak

This paper presents a study on few-shot classification in the context of histopathology images. While few-shot learning has been studied for natural image classification, its application to histopathology is relatively unexplored. Given the…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Ardhendu Sekhar , Ravi Kant Gupta , Amit Sethi

Methods to correct class imbalance, i.e. imbalance between the frequency of outcome events and non-events, are receiving increasing interest for developing prediction models. We examined the effect of imbalance correction on the performance…

Methodology · Statistics 2022-02-21 Ruben van den Goorbergh , Maarten van Smeden , Dirk Timmerman , Ben Van Calster

Class-imbalance refers to classification problems in which many more instances are available for certain classes than for others. Such imbalanced datasets require special attention because traditional classifiers generally favor the…

Machine Learning · Computer Science 2018-11-30 Rafael M. O. Cruz , Mariana A. Souza , Robert Sabourin , George D. C. Cavalcanti

Deep learning models have become increasingly useful in many different industries. On the domain of image classification, convolutional neural networks proved the ability to learn robust features for the closed set problem, as shown in many…

Computer Vision and Pattern Recognition · Computer Science 2022-03-01 Rafael S. Pereira , Alexis Joly , Patrick Valduriez , Fabio Porto

Real-world categorization is severely hampered by class imbalance because traditional ensembles favor majority classes, which lowers minority performance and overall F1-score. We provide a unique ensemble technique for imbalanced problems…

Computation and Language · Computer Science 2026-04-14 Mohamed Ehab , Ali Hamdi , Khaled Shaban
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