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Class-imbalanced datasets are known to cause the problem of model being biased towards the majority classes. In this project, we set up two research questions: 1) when is the class-imbalance problem more prevalent in self-supervised…

机器学习 · 计算机科学 2022-12-23 Hye-min Chang , Sungkyun Chang

This work focuses on classification over time series data. When a time series is generated by non-stationary phenomena, the pattern relating the series with the class to be predicted may evolve over time (concept drift). Consequently,…

机器学习 · 计算机科学 2020-04-02 Eric L. Manibardo , Ibai Laña , Jesus L. Lobo , Javier Del Ser

Imbalanced classification problems are extremely common in natural language processing and are solved using a variety of resampling and filtering techniques, which often involve making decisions on how to select training data or decide…

计算与语言 · 计算机科学 2022-09-02 Ryan Muther , David Smith

In many real-world pattern recognition scenarios, such as in medical applications, the corresponding classification tasks can be of an imbalanced nature. In the current study, we focus on binary, imbalanced classification tasks, i.e.~binary…

机器学习 · 计算机科学 2020-12-01 Peter Bellmann , Heinke Hihn , Daniel A. Braun , Friedhelm Schwenker

Monitoring data transfer performance is a crucial task in scientific computing networks. By predicting performance early in the communication phase, potentially sluggish transfers can be identified and selectively monitored, optimizing…

机器学习 · 计算机科学 2025-12-17 Jacob Taegon Kim , Alex Sim , Kesheng Wu , Jinoh Kim

Semi-Supervised Learning (SSL) has achieved great success in overcoming the difficulties of labeling and making full use of unlabeled data. However, SSL has a limited assumption that the numbers of samples in different classes are balanced,…

机器学习 · 计算机科学 2020-02-18 Minsung Hyun , Jisoo Jeong , Nojun Kwak

Class imbalance poses a challenge for developing unbiased, accurate predictive models. In particular, in image segmentation neural networks may overfit to the foreground samples from small structures, which are often heavily…

计算机视觉与模式识别 · 计算机科学 2021-02-23 Zeju Li , Konstantinos Kamnitsas , Ben Glocker

Biomedical data are widely accepted in developing prediction models for identifying a specific tumor, drug discovery and classification of human cancers. However, previous studies usually focused on different classifiers, and overlook the…

定量方法 · 定量生物学 2019-11-05 Shigang Liu , Jun Zhang , Yang Xiang , Wanlei Zhou , Dongxi Xiang

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

Class imbalance in deep neural networks (DNNs) has witnessed a rapid increase in research attention in recent years. However, the varying accounts of the reasons behind the poor performance of DNN on imbalance data in pertinent literature…

机器学习 · 计算机科学 2026-05-26 Ismail B. Mustapha , Shafaatunnur Hasan , Sunday O. Olatunji , Hatem S. Y. Nabus

A toy model of binary classification is studied with the aim of clarifying the class-wise resampling/reweighting effect on the feature learning performance under the presence of class imbalance. In the analysis, a high-dimensional limit of…

机器学习 · 统计学 2025-04-23 Tomoyuki Obuchi , Toshiyuki Tanaka

Continual learning, the setting where a learning agent is faced with a never ending stream of data, continues to be a great challenge for modern machine learning systems. In particular the online or "single-pass through the data" setting…

机器学习 · 计算机科学 2019-10-31 Rahaf Aljundi , Lucas Caccia , Eugene Belilovsky , Massimo Caccia , Min Lin , Laurent Charlin , Tinne Tuytelaars

Class-incremental learning of deep networks sequentially increases the number of classes to be classified. During training, the network has only access to data of one task at a time, where each task contains several classes. In this…

计算机视觉与模式识别 · 计算机科学 2020-04-02 Lu Yu , Bartłomiej Twardowski , Xialei Liu , Luis Herranz , Kai Wang , Yongmei Cheng , Shangling Jui , Joost van de Weijer

We consider the link prediction problem in a partially observed network, where the objective is to make predictions in the unobserved portion of the network. Many existing methods reduce link prediction to binary classification problem.…

机器学习 · 统计学 2016-02-23 Bopeng Li , Sougata Chaudhuri , Ambuj Tewari

In visual generation tasks, the responses and combinations of complex concepts often lack stability and are error-prone, which remains an under-explored area. In this paper, we attempt to explore the causal factors for poor concept…

计算机视觉与模式识别 · 计算机科学 2025-11-12 Yukai Shi , Jiarong Ou , Rui Chen , Haotian Yang , Jiahao Wang , Xin Tao , Pengfei Wan , Di Zhang , Kun Gai

Machine unlearning aims to remove the influence of specific training data from a learned model without full retraining. While recent work has begun to explore unlearning in quantum machine learning, existing approaches largely rely on…

机器学习 · 计算机科学 2026-02-10 Nausherwan Malik , Zubair Khalid , Muhammad Faryad

Class-imbalance is one of the major challenges in real world datasets, where a few classes (called majority classes) constitute much more data samples than the rest (called minority classes). Learning deep neural networks using such…

计算机视觉与模式识别 · 计算机科学 2020-10-06 Saptarshi Sinha , Hiroki Ohashi , Katsuyuki Nakamura

Active learning aims to optimize the dataset annotation process when resources are constrained. Most existing methods are designed for balanced datasets. Their practical applicability is limited by the fact that a majority of real-life…

机器学习 · 计算机科学 2022-02-02 Umang Aggarwal , Adrian Popescu , Céline Hudelot

Continuous machine learning pipelines are common in industrial settings where models are periodically trained on data streams. Unfortunately, concept drifts may occur in data streams where the joint distribution of the data X and label y,…

机器学习 · 计算机科学 2023-12-18 Minsu Kim , Seong-Hyeon Hwang , Steven Euijong Whang

Purpose: Malicious web domain identification is of significant importance to the security protection of Internet users. With online credibility and performance data, this paper aims to investigate the use of machine learning tech-niques for…

机器学习 · 计算机科学 2018-10-22 Zhongyi Hu , Raymond Chiong , Ilung Pranata , Yukun Bao , Yuqing Lin