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Differences in data size per class, also known as imbalanced data distribution, have become a common problem affecting data quality. Big Data scenarios pose a new challenge to traditional imbalanced classification algorithms, since they are…

机器学习 · 计算机科学 2021-09-06 Diego García-Gil , Salvador García , Ning Xiong , Francisco Herrera

Hypergraphs are increasingly utilized in both unimodal and multimodal data scenarios due to their superior ability to model and extract higher-order relationships among nodes, compared to traditional graphs. However, current hypergraph…

机器学习 · 计算机科学 2024-09-10 Ziming Zhao , Tiehua Zhang , Zijian Yi , Zhishu Shen

Graph-based machine learning has seen an increased interest over the last decade with many connections to other fields of applied mathematics. Learning based on partial differential equations, such as the phase-field Allen-Cahn equation,…

数值分析 · 数学 2025-12-23 Chiara Faccio , Margherita Porcelli , Francesco Rinaldi , Martin Stoll

In high dimensions, most machine learning method perform fragile even there are a little outliers. To address this, we hope to introduce a new method with the base learner, such as Bayesian regression or stochastic gradient descent to solve…

机器学习 · 计算机科学 2022-06-16 Hanming Wang , Haozheng Luo , Yue Wang

Because of "the non-repeatability of the experiment settings and conditions" and "the variability of brain patterns among subjects", the data distributions across sessions and electrodes are different in cross-subject motor imagery (MI)…

人机交互 · 计算机科学 2024-04-17 Zhige Chen , Rui Yang , Mengjie Huang , Chengxuan Qin , Zidong Wang

This paper introduces a new approach to address the issue of class imbalance in graph neural networks (GNNs) for learning on graph-structured data. Our approach integrates imbalanced node classification and Bias-Variance Decomposition,…

机器学习 · 计算机科学 2025-02-26 Liang Yan , Gengchen Wei , Chen Yang , Shengzhong Zhang , Zengfeng Huang

The imbalanced data classification is one of the most crucial tasks facing modern data analysis. Especially when combined with other difficulty factors, such as the presence of noise, overlapping class distributions, and small disjuncts,…

机器学习 · 计算机科学 2020-04-08 Michał Koziarski , Michał Woźniak , Bartosz Krawczyk

Continual learning from data streams is among the most important topics in contemporary machine learning. One of the biggest challenges in this domain lies in creating algorithms that can continuously adapt to arriving data. However,…

机器学习 · 计算机科学 2021-04-22 Łukasz Korycki , Bartosz Krawczyk

Bayesian optimization (BO) is a sample efficient approach to automatically tune the hyperparameters of machine learning models. In practice, one frequently has to solve similar hyperparameter tuning problems sequentially. For example, one…

机器学习 · 计算机科学 2021-02-26 Samuel Horváth , Aaron Klein , Peter Richtárik , Cédric Archambeau

Deep learning has emerged as a prominent field in recent literature, showcasing the introduction of models that utilize transfer learning to achieve remarkable accuracies in the classification of brain tumor MRI images. However, the…

计算机视觉与模式识别 · 计算机科学 2023-08-15 Raza Imam , Mohammed Talha Alam

Digital Breast Tomosynthesis (DBT) is a widely used medical imaging modality for breast cancer screening and diagnosis, offering higher spatial resolution and greater detail through its 3D-like breast volume imaging capability. However, the…

图像与视频处理 · 电气工程与系统科学 2024-03-21 Yuexi Du , Regina J. Hooley , John Lewin , Nicha C. Dvornek

Model-based optimization (MBO) is increasingly applied to design problems in science and engineering. A common scenario involves using a fixed training set to train models, with the goal of designing new samples that outperform those…

Future vehicular communication networks call for new solutions to support their capacity demands, by leveraging the potential of the millimeter-wave (mm-wave) spectrum. Mobility, in particular, poses severe challenges in their design, and…

信息论 · 计算机科学 2018-04-27 Maria Scalabrin , Nicolò Michelusi , Michele Rossi

Many machine learning tasks aim to find models that work well not for a single, but for a group of criteria, often opposing ones. One such example is imbalanced data classification, where, on the one hand, we want to achieve the best…

机器学习 · 计算机科学 2025-11-18 Szymon Wojciechowski , Michał Woźniak

We propose BiCDO (Bias-Controlled Class Distribution Optimizer), an iterative, data-centric framework that identifies Pareto optimized class distributions for multi-class image classification. BiCDO enables performance prioritization for…

计算机视觉与模式识别 · 计算机科学 2025-09-16 Mirco Felske , Stefan Stiene

Machine learning methods have greatly changed science, engineering, finance, business, and other fields. Despite the tremendous accomplishments of machine learning and deep learning methods, many challenges still remain. In particular, the…

机器学习 · 计算机科学 2021-09-09 Ekaterina Merkurjev , Duc DUy Nguyen , Guo-Wei Wei

We consider the problem of constructing embeddings of large attributed graphs and supporting multiple downstream learning tasks. We develop a graph embedding method, which is based on extending deep metric and unbiased contrastive learning…

机器学习 · 计算机科学 2024-11-22 Xiang Li , Gagan Agrawal , Ruoming Jin , Rajiv Ramnath

Small, imbalanced datasets and poor input image quality can lead to high false predictions rates with deep learning models. This paper introduces Class-Based Image Composition, an approach that allows us to reformulate training inputs…

计算机视觉与模式识别 · 计算机科学 2025-11-10 Hlali Azzeddine , Majid Ben Yakhlef , Soulaiman El Hazzat

Objectives: Metabolic Bariatric Surgery (MBS) is a critical intervention for patients living with obesity and related health issues. Accurate classification and prediction of patient outcomes are vital for optimizing treatment strategies.…

Imbalanced regression occurs when continuous target variables have skewed distributions, creating sparse regions that are difficult for machine learning models to predict accurately. This issue particularly affects neural networks, which…

机器学习 · 计算机科学 2025-04-22 Shayan Alahyari , Mike Domaratzki