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In real-world regression tasks, datasets frequently exhibit imbalanced distributions, characterized by a scarcity of data in high-complexity regions and an abundance in low-complexity areas. This imbalance presents significant challenges…

机器学习 · 计算机科学 2025-02-05 Donghe Chen , Jiaxuan Yue , Tengjie Zheng , Lanxuan Wang , Lin Cheng

With rapid technological growth, automatic pronunciation assessment has transitioned toward systems that evaluate pronunciation in various aspects, such as fluency and stress. However, despite the highly imbalanced score labels within each…

计算与语言 · 计算机科学 2023-08-30 Heejin Do , Yunsu Kim , Gary Geunbae Lee

Algorithms designed for addressing typical supervised classification problems can only learn from a fixed set of samples and labels, making them unsuitable for the real world, where data arrives as a stream of samples often associated with…

机器学习 · 计算机科学 2024-02-08 Sourav Mishra , Shirin Dora , Suresh Sundaram

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

In this paper we propose a novel data-level algorithm for handling data imbalance in the classification task, Synthetic Majority Undersampling Technique (SMUTE). SMUTE leverages the concept of interpolation of nearby instances, previously…

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

We learn about the world from a diverse range of sensory information. Automated systems lack this ability as investigation has centred on processing information presented in a single form. Adapting architectures to learn from multiple…

机器学习 · 计算机科学 2020-10-27 Jason Armitage , Shramana Thakur , Rishi Tripathi , Jens Lehmann , Maria Maleshkova

Attribute recognition, particularly facial, extracts many labels for each image. While some multi-task vision problems can be decomposed into separate tasks and stages, e.g., training independent models for each task, for a growing set of…

计算机视觉与模式识别 · 计算机科学 2017-08-08 Ethan Rudd , Manuel Günther , Terrance Boult

Distributionally robust optimization (DRO) and invariant risk minimization (IRM) are two popular methods proposed to improve out-of-distribution (OOD) generalization performance of machine learning models. While effective for small models,…

机器学习 · 计算机科学 2023-01-25 Xiao Zhou , Yong Lin , Renjie Pi , Weizhong Zhang , Renzhe Xu , Peng Cui , Tong Zhang

Class imbalance significantly impacts the performance of multi-label classifiers. Oversampling is one of the most popular approaches, as it augments instances associated with less frequent labels to balance the class distribution. Existing…

机器学习 · 计算机科学 2024-08-26 Ao Zhou , Bin Liu , Jin Wang , Kaiwei Sun , Kelin Liu

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

Solving constrained optimization problems by multi-objective evolutionary algorithms has scored tremendous achievements in the last decade. Standard multi-objective schemes usually aim at minimizing the objective function and also the…

神经与进化计算 · 计算机科学 2015-10-02 Tao Xu , Jun He

A common problem of the real-world data sets is the class imbalance, which can significantly affect the classification abilities of classifiers. Numerous methods have been proposed to cope with this problem; however, even state-of-the-art…

机器学习 · 计算机科学 2019-11-19 Hubert Jegierski , Stanisław Saganowski

A wide range of applications arising in machine learning and signal processing can be cast as convex optimization problems. These problems are often ill-posed, i.e., the optimal solution lacks a desired property such as uniqueness or…

最优化与控制 · 数学 2019-07-18 Mostafa Amini , Farzad Yousefian

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

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

Surgical risk increases significantly when patients present with comorbid conditions. This has resulted in the creation of numerous risk stratification tools with the objective of formulating associated surgical risk to assist both surgeons…

机器学习 · 计算机科学 2020-12-18 Yuxuan , Yang , Hadi Akbarzadeh Khorshidi , Uwe Aickelin , Aditi Nevgi , Elif Ekinci

Class-level evaluation can conceal substantial performance disparities across subconcepts within the same class, causing models that perform well on average to fail on specific subpopulations. Prior work has shown that common evaluation…

机器学习 · 计算机科学 2026-04-30 Taylor Maxson , Roberto Corizzo , Yaning Wu , Nathalie Japkowicz , Colin Bellinger

When using machine learning for imbalanced binary classification problems, it is common to subsample the majority class to create a (more) balanced training dataset. This biases the model's predictions because the model learns from data…

机器学习 · 计算机科学 2025-11-03 Nathan Phelps , Daniel J. Lizotte , Douglas G. Woolford

The goal of diversity sampling is to select a representative subset of data in a way that maximizes information contained in the subset while keeping its cardinality small. We introduce the ordered diverse sampling problem based on a new…

计算与语言 · 计算机科学 2025-03-17 Ashish Tiwari , Mukul Singh , Ananya Singha , Arjun Radhakrishna

The pervasive issue of bias in AI presents a significant challenge to painting classification, and is getting more serious as these systems become increasingly integrated into tasks like art curation and restoration. Biases, often arising…

人工智能 · 计算机科学 2025-07-11 Mridula Vijendran , Shuang Chen , Jingjing Deng , Hubert P. H. Shum