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Oversampling is one of the most widely used approaches for addressing imbalanced classification. The core idea is to generate additional minority samples to rebalance the dataset. Most existing methods, such as SMOTE, require converting…

机器学习 · 计算机科学 2025-10-14 Dang Nguyen , Sunil Gupta , Kien Do , Thin Nguyen , Taylor Braund , Alexis Whitton , Svetha Venkatesh

Balancing the data before training a classifier is a popular technique to address the challenges of imbalanced binary classification in tabular data. Balancing is commonly achieved by duplication of minority samples or by generation of…

机器学习 · 计算机科学 2022-05-12 Yotam Elor , Hadar Averbuch-Elor

Accurate illness diagnosis is vital for effective treatment and patient safety. Machine learning models are widely used for cancer diagnosis based on historical medical data. However, data imbalance remains a major challenge, leading to…

机器学习 · 计算机科学 2025-03-18 Soufiane Bacha , Huansheng Ning , Belarbi Mostefa , Doreen Sebastian Sarwatt , Sahraoui Dhelim

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

Machine learning classifiers often stumble over imbalanced datasets where classes are not equally represented. This inherent bias towards the majority class may result in low accuracy in labeling minority class. Imbalanced learning is…

机器学习 · 计算机科学 2019-11-14 Wenhao Zhang , Ramin Ramezani , Arash Naeim

Multimarginal optimal transport (MOT) is a powerful framework for modeling interactions between multiple distributions, yet its applicability is bottlenecked by a high computational overhead. Entropic regularization provides computational…

机器学习 · 计算机科学 2025-06-03 Dor Tsur , Ziv Goldfeld , Kristjan Greenewald , Haim Permuter

In the era of big data, the utilization of credit-scoring models to determine the credit risk of applicants accurately becomes a trend in the future. The conventional machine learning on credit scoring data sets tends to have poor…

机器学习 · 统计学 2021-02-10 Xiaofan Liua , Zuoquan Zhanga , Di Wanga

Class imbalance and distributional differences in large datasets present significant challenges for classification tasks machine learning, often leading to biased models and poor predictive performance for minority classes. This work…

机器学习 · 统计学 2024-12-20 Alex Mak , Shubham Sahoo , Shivani Pandey , Yidan Yue , Linglong Kong

Deep Neural Networks (DNNs) have achieved remarkable success in a variety of tasks, especially when it comes to prediction accuracy. However, in complex real-world scenarios, particularly in safety-critical applications, high accuracy alone…

人工智能 · 计算机科学 2024-05-31 Han Liu , Peng Cui , Bingning Wang , Jun Zhu , Xiaolin Hu

Imbalanced classification is a well-known challenge faced by many real-world applications. This issue occurs when the distribution of the target variable is skewed, leading to a prediction bias toward the majority class. With the arrival of…

机器学习 · 计算机科学 2023-10-10 Carla Vairetti , José Luis Assadi , Sebastián Maldonado

Despite the enormous amount of data, particular events of interest can still be quite rare. Classification of rare events is a common problem in many domains, such as fraudulent transactions, malware traffic analysis and network intrusion…

机器学习 · 计算机科学 2021-01-01 Ivan Letteri , Antonio Di Cecco , Abeer Dyoub , Giuseppe Della Penna

This paper introduces Residual-based Smote (RSmote), an innovative local adaptive sampling technique tailored to improve the performance of Physics-Informed Neural Networks (PINNs) through imbalanced learning strategies. Traditional…

机器学习 · 计算机科学 2025-01-22 Jiaqi Luo , Yahong Yang , Yuan Yuan , Shixin Xu , Wenrui Hao

Imbalanced classification is a significant challenge in machine learning, especially in critical applications like medical diagnosis, fraud detection, and cybersecurity. Traditional oversampling techniques, such as SMOTE, often fail to…

机器学习 · 计算机科学 2025-09-16 Mahabubur Rahman Miraj , Hongyu Huang , Ting Yang , Jinxue Zhao , Nankun Mu , Xinyu Lei

Large language models (LLMs) have achieved remarkable performance on various natural language tasks. However, they are trained on static corpora and their knowledge can become outdated quickly in the fast-changing world. This motivates the…

计算与语言 · 计算机科学 2025-05-29 Tianci Liu , Ruirui Li , Zihan Dong , Hui Liu , Xianfeng Tang , Qingyu Yin , Linjun Zhang , Haoyu Wang , Jing Gao

We propose a new approach, Knowledge Distillation using Optimal Transport (KNOT), to distill the natural language semantic knowledge from multiple teacher networks to a student network. KNOT aims to train a (global) student model by…

计算与语言 · 计算机科学 2022-09-20 Rishabh Bhardwaj , Tushar Vaidya , Soujanya Poria

A fundamental task in machine learning involves visualizing high-dimensional data sets that arise in high-impact application domains. When considering the context of large imbalanced data, this problem becomes much more challenging. In this…

机器学习 · 计算机科学 2021-09-21 Parisa Hajibabaee , Farhad Pourkamali-Anaraki , Mohammad Amin Hariri-Ardebili

Class imbalance in binary classification tasks remains a significant challenge in machine learning, often resulting in poor performance on minority classes. This study comprehensively evaluates three widely-used strategies for handling…

机器学习 · 计算机科学 2024-10-01 Mohamed Abdelhamid , Abhyuday Desai

This paper presents the performance of a classifier built using the stackingC algorithm in nine different data sets. Each data set is generated using a sampling technique applied on the original imbalanced data set. Five new sampling…

机器学习 · 计算机科学 2016-01-20 Maureen Lyndel C. Lauron , Jaderick P. Pabico

In this work, we employ the Synthetic Minority Oversampling Technique (SMOTE) to generate instances of the minority class of an imbalanced Coronary Artery Disease dataset. We firstly analyze the public dataset Z -- Alizadeh Sani, a dataset…

医学物理 · 物理学 2020-04-09 Ioannis D. Apostolopoulos

We propose Score-of-Mixture Training (SMT), a novel framework for training one-step generative models by minimizing a class of divergences called the $\alpha$-skew Jensen--Shannon divergence. At its core, SMT estimates the score of mixture…

机器学习 · 计算机科学 2025-07-16 Tejas Jayashankar , J. Jon Ryu , Gregory Wornell