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Imbalanced data classification problem has always been a popular topic in the field of machine learning research. In order to balance the samples between majority and minority class. Oversampling algorithm is used to synthesize new minority…

机器学习 · 计算机科学 2019-09-02 Junyi Zou , Jinliang Zhang , Ping Jiang

Imbalanced datasets are ubiquitous. Classification performance on imbalanced datasets is generally poor for the minority class as the classifier cannot learn decision boundaries well. However, in sensitive applications like fraud detection,…

机器学习 · 计算机科学 2019-10-25 Vishwa Karia , Wenhao Zhang , Arash Naeim , Ramin Ramezani

Class-imbalanced datasets are known to cause the problem of model being biased towards the majority classes. In this project, we set up two research questions: 1) when is the class-imbalance problem more prevalent in self-supervised…

机器学习 · 计算机科学 2022-12-23 Hye-min Chang , Sungkyun Chang

Network traffic data is huge, varying and imbalanced because various classes are not equally distributed. Machine learning (ML) algorithms for traffic analysis uses the samples from this data to recommend the actions to be taken by the…

网络与互联网体系结构 · 计算机科学 2013-11-13 Raman Singh , Harish Kumar , R. K. Singla

Incremental Learning (IL) allows AI systems to adapt to streamed data. Most existing algorithms make two strong hypotheses which reduce the realism of the incremental scenario: (1) new data are assumed to be readily annotated when streamed…

计算机视觉与模式识别 · 计算机科学 2020-08-26 Eden Belouadah , Adrian Popescu , Umang Aggarwal , Léo Saci

Supervised deep learning methods are enjoying enormous success in many practical applications of computer vision and have the potential to revolutionize robotics. However, the marked performance degradation to biases and imbalanced data…

计算机视觉与模式识别 · 计算机科学 2020-08-14 Aadarsh Sahoo , Ankit Singh , Rameswar Panda , Rogerio Feris , Abir Das

Adversarial approach has been widely used for data generation in the last few years. However, this approach has not been extensively utilized for classifier training. In this paper, we propose an adversarial framework for classifier…

机器学习 · 计算机科学 2018-11-22 Ehsan Montahaei , Mahsa Ghorbani , Mahdieh Soleymani Baghshah , Hamid R. Rabiee

Class imbalance is a characteristic known for making learning more challenging for classification models as they may end up biased towards the majority class. A promising approach among the ensemble-based methods in the context of imbalance…

机器学习 · 计算机科学 2022-06-20 Mariana A. Souza , Robert Sabourin , George D. C. Cavalcanti , Rafael M. O. Cruz

imbalanced-ensemble, abbreviated as imbens, is an open-source Python toolbox for leveraging the power of ensemble learning to address the class imbalance problem. It provides standard implementations of popular ensemble imbalanced learning…

机器学习 · 计算机科学 2023-02-24 Zhining Liu , Jian Kang , Hanghang Tong , Yi Chang

Data in real-world application often exhibit skewed class distribution which poses an intense challenge for machine learning. Conventional classification algorithms are not effective in the case of imbalanced data distribution, and may fail…

机器学习 · 计算机科学 2019-01-08 Enlu Lin , Qiong Chen , Xiaoming Qi

Deep Learning methods have significantly advanced various data-driven tasks such as regression, classification, and forecasting. However, much of this progress has been predicated on the strong but often unrealistic assumption that training…

机器学习 · 计算机科学 2023-10-12 Josias Moukpe

This paper evaluates six strategies for mitigating imbalanced data: oversampling, undersampling, ensemble methods, specialized algorithms, class weight adjustments, and a no-mitigation approach referred to as the baseline. These strategies…

机器学习 · 计算机科学 2023-11-13 Jacques Wainer

This study is motivated by the magnitude of the problem of Louisiana high school dropout and its negative impacts on individual and public well-being. Our goal is to predict students who are at risk of high school dropout, by examining…

机器学习 · 计算机科学 2019-10-30 Marmar Orooji , Jianhua Chen

One of the significant problems associated with imbalanced data classification is the lack of reliable metrics. This runs primarily from the fact that for most real-life (as well as commonly used benchmark) problems, we do not have…

机器学习 · 计算机科学 2024-04-16 Szymon Wojciechowski , Michał Woźniak

Class imbalance is a common issue in many domain applications of learning algorithms. Oftentimes, in the same domains it is much more relevant to correctly classify and profile minority class observations. This need can be addressed by…

机器学习 · 统计学 2021-03-23 Michela C. Massi , Francesca Ieva , Francesca Gasperoni , Anna Maria Paganoni

Binary classification with an imbalanced dataset is challenging. Models tend to consider all samples as belonging to the majority class. Although existing solutions such as sampling methods, cost-sensitive methods, and ensemble learning…

机器学习 · 计算机科学 2022-07-08 Hsin-Han Tsai , Ta-Wei Yang , Wai-Man Wong , Cheng-Fu Chou

This study examines the impact of class-imbalanced data on deep learning models and proposes a technique for data balancing by generating synthetic data for the minority class. Unlike random-based oversampling, our method prioritizes…

机器学习 · 计算机科学 2024-02-26 Hung Nguyen , Morris Chang

In this study, we consider classification problems based on neural networks in data-imbalanced environment. Learning from an imbalanced data set is one of the most important and practical problems in the field of machine learning. A…

机器学习 · 统计学 2019-12-02 Muneki Yasuda , Seishirou Ueno

Class imbalance exists in many classification problems, and since the data is designed for accuracy, imbalance in data classes can lead to classification challenges with a few classes having higher misclassification costs. The Backblaze…

机器学习 · 计算机科学 2023-10-16 Shuangshuang Yuan , Peng Wu , Yuehui Chen , Qiang Li

Class imbalanced datasets are common in real-world applications that range from credit card fraud detection to rare disease diagnostics. Several popular classification algorithms assume that classes are approximately balanced, and hence…