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The rapid advancement in data-driven research has increased the demand for effective graph data analysis. However, real-world data often exhibits class imbalance, leading to poor performance of machine learning models. To overcome this…

机器学习 · 计算机科学 2023-04-11 Yihong Ma , Yijun Tian , Nuno Moniz , Nitesh V. Chawla

Although many real-world applications, such as disease prediction, and fault detection suffer from class imbalance, most existing graph-based classification methods ignore the skewness of the distribution of classes; therefore, tend to be…

机器学习 · 计算机科学 2024-07-01 Mahdi Mohammadizadeh , Arash Mozhdehi , Yani Ioannou , Xin Wang

Despite the power of deep neural networks for a wide range of tasks, an overconfident prediction issue has limited their practical use in many safety-critical applications. Many recent works have been proposed to mitigate this issue, but…

机器学习 · 计算机科学 2020-08-14 Jooyoung Moon , Jihyo Kim , Younghak Shin , Sangheum Hwang

With rapid technological growth, automatic pronunciation assessment has transitioned toward systems that evaluate pronunciation in various aspects, such as fluency and stress. However, despite the highly imbalanced score labels within each…

计算与语言 · 计算机科学 2023-08-30 Heejin Do , Yunsu Kim , Gary Geunbae Lee

In the classification of a class imbalance dataset, the performance measure used for the model selection and comparison to competing methods is a major issue. In order to overcome this problem several performance measures are defined and…

机器学习 · 计算机科学 2020-06-25 Robert Burduk

In last few years there are major changes and evolution has been done on classification of data. As the application area of technology is increases the size of data also increases. Classification of data becomes difficult because of…

机器学习 · 计算机科学 2013-05-09 Rushi Longadge , Snehalata Dongre

Due to the advantages of leveraging unlabeled data and learning meaningful representations, semi-supervised learning and contrastive learning have been progressively combined to achieve better performances in popular applications with few…

计算机视觉与模式识别 · 计算机科学 2023-12-27 Bowen Tao , Lan Li , Xin-Chun Li , De-Chuan Zhan

In medical image classification tasks, it is common to find that the number of normal samples far exceeds the number of abnormal samples. In such class-imbalanced situations, reliable training of deep neural networks continues to be a major…

机器学习 · 计算机科学 2022-04-06 Sivaramakrishnan Rajaraman , Prasanth Ganesan , Sameer Antani

The vast majority of real world classification problems are imbalanced, meaning there are far fewer data from the class of interest (the positive class) than from other classes. We propose two machine learning algorithms to handle highly…

机器学习 · 统计学 2014-06-10 Siong Thye Goh , Cynthia Rudin

Data augmentation is a commonly applied technique with two seemingly related advantages. With this method one can increase the size of the training set generating new samples and also increase the invariance of the network against the…

计算机视觉与模式识别 · 计算机科学 2022-05-31 Jalal Al-afandi , Bálint Magyar , András Horváth

As part of autonomous car driving systems, semantic segmentation is an essential component to obtain a full understanding of the car's environment. One difficulty, that occurs while training neural networks for this purpose, is class…

计算机视觉与模式识别 · 计算机科学 2019-01-25 Robin Chan , Matthias Rottmann , Fabian Hüger , Peter Schlicht , Hanno Gottschalk

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…

Convolutional neural networks (CNNs) have achieved impressive results on imbalanced image data, but they still have difficulty generalizing to minority classes and their decisions are difficult to interpret. These problems are related…

计算机视觉与模式识别 · 计算机科学 2022-10-19 Damien Dablain , Kristen N. Jacobson , Colin Bellinger , Mark Roberts , Nitesh Chawla

The Area under the ROC curve (AUC) is a well-known ranking metric for problems such as imbalanced learning and recommender systems. The vast majority of existing AUC-optimization-based machine learning methods only focus on binary-class…

机器学习 · 计算机科学 2021-07-29 Zhiyong Yang , Qianqian Xu , Shilong Bao , Xiaochun Cao , Qingming Huang

Neural networks trained with class-imbalanced data are known to perform poorly on minor classes of scarce training data. Several recent works attribute this to over-fitting to minor classes. In this paper, we provide a novel explanation of…

机器学习 · 计算机科学 2021-10-12 Han-Jia Ye , De-Chuan Zhan , Wei-Lun Chao

Although binary classification is a well-studied problem, training reliable classifiers under severe class imbalance remains a challenge. Recent techniques mitigate the ill effects of imbalance on training by modifying the loss functions or…

机器学习 · 计算机科学 2024-10-07 Kelsey Lieberman , Swarna Kamlam Ravindran , Shuai Yuan , Carlo Tomasi

Deep learning models have seen significant successes in numerous applications, but their inner workings remain elusive. The purpose of this work is to quantify the learning process of deep neural networks through the lens of a novel…

机器学习 · 计算机科学 2023-05-10 Rayna Andreeva , Katharina Limbeck , Bastian Rieck , Rik Sarkar

In practice, machine learning experts are often confronted with imbalanced data. Without accounting for the imbalance, common classifiers perform poorly and standard evaluation metrics mislead the practitioners on the model's performance. A…

机器学习 · 计算机科学 2020-07-21 Ramiro Camino , Christian Hammerschmidt , Radu State

Intelligent diagnosis method based on data-driven and deep learning is an attractive and meaningful field in recent years. However, in practical application scenarios, the imbalance of time-series fault is an urgent problem to be solved.…

机器学习 · 计算机科学 2021-07-15 Xingtai Gui , Jiyang Zhang

One main challenge in imbalanced graph classification is to learn expressive representations of the graphs in under-represented (minority) classes. Existing generic imbalanced learning methods, such as oversampling and imbalanced learning…

机器学习 · 计算机科学 2024-05-20 Rongrong Ma , Guansong Pang , Ling Chen