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Class imbalance in supervised classification often degrades model performance by biasing predictions toward the majority class, particularly in critical applications such as medical diagnosis and fraud detection. Traditional oversampling…

机器学习 · 统计学 2025-09-16 Suman Cha , Hyunjoong Kim

Class imbalance in machine learning poses a significant challenge, as skewed datasets often hinder performance on minority classes. Traditional oversampling techniques, which are commonly used to alleviate class imbalance, have several…

机器学习 · 计算机科学 2025-09-09 Sukumar Kishanthan , Asela Hevapathige

This paper introduces Quantum-SMOTEV2, an advanced variant of the Quantum-SMOTE method, leveraging quantum computing to address class imbalance in machine learning datasets without K-Means clustering. Quantum-SMOTEV2 synthesizes data…

量子物理 · 物理学 2025-02-03 Nishikanta Mohanty , Bikash K. Behera , Christopher Ferrie

Data imbalance remains one of the open challenges in the contemporary machine learning. It is especially prevalent in case of medical data, such as histopathological images. Traditional data-level approaches for dealing with data imbalance…

机器学习 · 计算机科学 2021-04-20 Michał Koziarski

Automatically describing video content with natural language is a fundamental challenge of multimedia. Recurrent Neural Networks (RNN), which models sequence dynamics, has attracted increasing attention on visual interpretation. However,…

计算机视觉与模式识别 · 计算机科学 2015-06-05 Yingwei Pan , Tao Mei , Ting Yao , Houqiang Li , Yong Rui

Both policy and research benefit from a better understanding of individuals' jobs. However, as large-scale administrative records are increasingly employed to represent labor market activity, new automatic methods to classify jobs will…

信息检索 · 计算机科学 2022-07-14 Germán Ortiz , Gemma Bel Enguix , Helena Gómez-Adorno , Iqra Ameer , Grigori Sidorov

Semantic similarity measures (SSMs) refer to a set of algorithms used to quantify the similarity of two or more terms belonging to the same ontology. Ontology terms may be associated to concepts, for instance in computational biology gene…

分子网络 · 定量生物学 2013-05-22 Pietro Hiram Guzzi , Simone Truglia , Pierangelo Veltri , Mario Cannataro

This work studies the widely adopted ancestral sampling algorithms for auto-regressive language models, which is not widely studied in the literature. We use the quality-diversity (Q-D) trade-off to investigate three popular sampling…

计算与语言 · 计算机科学 2020-09-16 Moin Nadeem , Tianxing He , Kyunghyun Cho , James Glass

Many machine learning models depend on solving a large scale optimization problem. Recently, sub-sampled Newton methods have emerged to attract much attention for optimization due to their efficiency at each iteration, rectified a weakness…

最优化与控制 · 数学 2016-09-06 Haishan Ye , Luo Luo , Zhihua Zhang

This study investigates rare event detection on tabular data within binary classification. Standard techniques to handle class imbalance include SMOTE, which generates synthetic samples from the minority class. However, SMOTE is…

机器学习 · 计算机科学 2025-04-01 Abdoulaye Sakho , Emmanuel Malherbe , Carl-Erik Gauthier , Erwan Scornet

Despite extensive research spanning several decades, class imbalance is still considered a profound difficulty for both machine learning and deep learning models. While data oversampling is the foremost technique to address this issue,…

机器学习 · 计算机科学 2025-02-12 Sukumar Kishanthan , Asela Hevapathige

In real-world applications, as data availability increases, obtaining labeled data for machine learning (ML) projects remains challenging due to the high costs and intensive efforts required for data annotation. Many ML projects,…

机器学习 · 计算机科学 2024-12-24 Ismail Hakki Karaman , Gulser Koksal , Levent Eriskin , Salih Salihoglu

A significant hurdle for analyzing large sample data is the lack of effective statistical computing and inference methods. An emerging powerful approach for analyzing large sample data is subsampling, by which one takes a random subsample…

统计方法学 · 统计学 2015-11-24 Rong Zhu , Ping Ma , Michael W. Mahoney , Bin Yu

Ensuring reliable ATM services is essential for modern banking, directly impacting customer satisfaction and the operational efficiency of financial institutions. This study introduces a data fusion approach that utilizes multi-classifier…

机器学习 · 计算机科学 2025-01-03 Alireza Safarzadeh , Mohammad Reza Jamali , Behzad Moshiri

Machine Translation (MT) system generally aims at automatic representation of source language into target language retaining the originality of context using various Natural Language Processing (NLP) techniques. Among various NLP methods,…

计算与语言 · 计算机科学 2026-03-04 Sudhansu Bala Das , Divyajoti Panda , Tapas Kumar Mishra , Bidyut Kr. Patra

Over 85 oversampling algorithms, mostly extensions of the SMOTE algorithm, have been built over the past two decades, to solve the problem of imbalanced datasets. However, it has been evident from previous studies that different…

机器学习 · 计算机科学 2021-07-16 Saptarshi Bej , Kristian Schultz , Prashant Srivastava , Markus Wolfien , Olaf Wolkenhauer

Faced with massive data, subsampling is a commonly used technique to improve computational efficiency, and using nonuniform subsampling probabilities is an effective approach to improve estimation efficiency. For computational efficiency,…

统计理论 · 数学 2022-05-19 Jing Wang , Jiahui Zou , HaiYing Wang

Several studies have proposed deep-learning-based models to predict the mean opinion score (MOS) of synthesized speech, showing the possibility of replacing human raters. However, inter- and intra-rater variability in MOSs makes it hard to…

音频与语音处理 · 电气工程与系统科学 2020-12-03 Yeunju Choi , Youngmoon Jung , Hoirin Kim

In this study, we systematically investigate the impact of class imbalance on classification performance of convolutional neural networks (CNNs) and compare frequently used methods to address the issue. Class imbalance is a common problem…

计算机视觉与模式识别 · 计算机科学 2018-10-16 Mateusz Buda , Atsuto Maki , Maciej A. Mazurowski

The problem of class imbalanced data is that the generalization performance of the classifier deteriorates due to the lack of data from minority classes. In this paper, we propose a novel minority over-sampling method to augment diversified…

计算机视觉与模式识别 · 计算机科学 2022-03-29 Seulki Park , Youngkyu Hong , Byeongho Heo , Sangdoo Yun , Jin Young Choi