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Experimental comparisons of performance represent an important aspect of research on optimization algorithms. In this work we present a methodology for defining the required sample sizes for designing experiments with desired statistical…

神经与进化计算 · 计算机科学 2018-10-16 Felipe Campelo , Fernanda Takahashi

Traditional metrics like accuracy, F1-score, and precision are frequently used to evaluate machine learning models, however they may not be sufficient for evaluating performance on tiny, unbalanced, or high-dimensional datasets. A…

机器学习 · 计算机科学 2024-12-11 Serzhan Ossenov

Class imbalance and group (e.g., race, gender, and age) imbalance are acknowledged as two reasons in data that hinder the trade-off between fairness and utility of machine learning classifiers. Existing techniques have jointly addressed…

机器学习 · 计算机科学 2023-05-24 Ryosuke Sonoda

Regression evaluation has been performed for decades. Some metrics have been identified to be robust against shifting and scaling of the data but considering the different distributions of data is much more difficult to address (imbalance…

机器学习 · 计算机科学 2020-09-14 Mario Michael Krell , Bilal Wehbe

Class distribution skews in imbalanced datasets may lead to models with prediction bias towards majority classes, making fair assessment of classifiers a challenging task. Metrics such as Balanced Accuracy are commonly used to evaluate a…

Complex systems are fascinating because their rich macroscopic properties emerge from the interaction of many simple parts. Understanding the building principles of these emergent phenomena in nature requires assessing natural complex…

神经元与认知 · 定量生物学 2022-11-17 Anna Levina , Viola Priesemann , Johannes Zierenberg

Different from deep neural networks for non-graph data classification, graph neural networks (GNNs) leverage the information exchange between nodes (or samples) when representing nodes. The category distribution shows an imbalance or even a…

机器学习 · 计算机科学 2021-10-19 Rui Wang , Weixuan Xiong , Qinghu Hou , Ou Wu

The class imbalance problem refers to the disproportionate distribution of samples across different classes within a dataset, where the minority classes are significantly underrepresented. This issue is also prevalent in graph-structured…

机器学习 · 计算机科学 2025-09-30 Fanlong Zeng , Wensheng Gan , Philip S. Yu

Many real world data mining applications involve obtaining predictive models using data sets with strongly imbalanced distributions of the target variable. Frequently, the least common values of this target variable are associated with…

机器学习 · 计算机科学 2015-05-14 Paula Branco , Luis Torgo , Rita Ribeiro

One challenging property lurking in medical datasets is the imbalanced data distribution, where the frequency of the samples between the different classes is not balanced. Training a model on an imbalanced dataset can introduce unique…

图像与视频处理 · 电气工程与系统科学 2022-04-06 Ashkan Khakzar , Yawei Li , Yang Zhang , Mirac Sanisoglu , Seong Tae Kim , Mina Rezaei , Bernd Bischl , Nassir Navab

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…

机器学习 · 计算机科学 2018-11-30 Rafael M. O. Cruz , Mariana A. Souza , Robert Sabourin , George D. C. Cavalcanti

In the AutoML domain, test accuracy is heralded as the quintessential metric for evaluating model efficacy, underpinning a wide array of applications from neural architecture search to hyperparameter optimization. However, the reliability…

机器学习 · 计算机科学 2024-09-24 Pawel Pukowski , Haiping Lu

Learning from class-imbalanced data continues to be a common and challenging problem in supervised learning as standard classification algorithms are designed to handle balanced class distributions. While different strategies exist to…

机器学习 · 计算机科学 2020-03-06 Felix Last , Georgios Douzas , Fernando Bacao

Ensemble technique and under-sampling technique are both effective tools used for imbalanced dataset classification problems. In this paper, a novel ensemble method combining the advantages of both ensemble learning for biasing classifiers…

机器学习 · 计算机科学 2025-02-05 Jinyan Li , Yaoyang Wu , Simon Fong , Antonio J. Tallón-Ballesteros , Xin-she Yang , Sabah Mohammed , Feng Wu

Data imbalance is a well-known issue in the field of machine learning, attributable to the cost of data collection, the difficulty of labeling, and the geographical distribution of the data. In computer vision, bias in data distribution…

计算机视觉与模式识别 · 计算机科学 2023-08-23 Shubham Shrivastava , Xianling Zhang , Sushruth Nagesh , Armin Parchami

Financial fraud detection poses a typical challenge characterized by class imbalance, where instances of fraud are extremely rare but can lead to unpredictable economic losses if misidentified. Precisely classifying these critical minority…

机器学习 · 计算机科学 2024-02-14 Lingyun Zhong

Data imbalance is a common problem in machine learning that can have a critical effect on the performance of a model. Various solutions exist but their impact on the convergence of the learning dynamics is not understood. Here, we elucidate…

机器学习 · 统计学 2024-02-20 Emanuele Francazi , Marco Baity-Jesi , Aurelien Lucchi

Pedestrian attribute recognition is an important multi-label classification problem. Although the convolutional neural networks are prominent in learning discriminative features from images, the data imbalance in multi-label setting for…

计算机视觉与模式识别 · 计算机科学 2020-05-22 Yang Hu , Xiaying Bai , Pan Zhou , Fanhua Shang , Shengmei Shen

Industrial surface defect inspection for sample-wise quality control (QC) must simultaneously decide whether a given sample contains defects and localize those defects spatially. In real production lines, extreme foreground-background…

计算机视觉与模式识别 · 计算机科学 2025-10-16 Hang-Cheng Dong , Yibo Jiao , Fupeng Wei , Guodong Liu , Dong Ye , Bingguo Liu

Learning from imbalanced data is among the most challenging areas in contemporary machine learning. This becomes even more difficult when considered the context of big data that calls for dedicated architectures capable of high-performance…

机器学习 · 计算机科学 2022-11-16 William C. Sleeman , Bartosz Krawczyk