Results 1 to 10 of about 13,919 (263)

Never underestimate biodiversity: how undersampling affects Bray–Curtis similarity estimates and a possible countermeasure

open access: yesThe European Zoological Journal, 2023
The Bray–Curtis dissimilarity is widely used to calculate β diversity on abundance data. However, the effect of undersampling on this index has received limited attention and only few studies addressed this topic. The paper aimed to investigate the error
Sönke Hardersen, Gianandrea La Porta
exaly   +3 more sources

A Comparison of Undersampling, Oversampling, and SMOTE Methods for Dealing with Imbalanced Classification in Educational Data Mining

open access: yesInformation (Switzerland), 2023
Educational data mining is capable of producing useful data-driven applications (e.g., early warning systems in schools or the prediction of students’ academic achievement) based on predictive models.
Okan Bulut   +2 more
exaly   +3 more sources

Enhancing Phishing Email Detection through Ensemble Learning and Undersampling

open access: yesApplied Sciences (Switzerland), 2023
In real-world scenarios, the number of phishing and benign emails is usually imbalanced, leading to traditional machine learning or deep learning algorithms being biased towards benign emails and misclassifying phishing emails.
Yijia Xu, Qinglin Qi
exaly   +3 more sources

Improving Software Defect Prediction in Noisy Imbalanced Datasets

open access: yesApplied Sciences, 2023
Software defect prediction is a popular method for optimizing software testing and improving software quality and reliability. However, software defect datasets usually have quality problems, such as class imbalance and data noise.
Haoxiang Shi   +3 more
doaj   +1 more source

Finding Biomarkers from a High-Dimensional Imbalanced Dataset Using the Hybrid Method of Random Undersampling and Lasso

open access: yesComTech, 2020
The research conducted undersampling and gene selection as a starting point for cancer classification in gene expression datasets with a high-dimensional and imbalanced class.
Masithoh Yessi Rochayani   +2 more
doaj   +1 more source

Resampling Imbalanced Network Intrusion Datasets to Identify Rare Attacks

open access: yesFuture Internet, 2023
This study, focusing on identifying rare attacks in imbalanced network intrusion datasets, explored the effect of using different ratios of oversampled to undersampled data for binary classification. Two designs were compared: random undersampling before
Sikha Bagui   +4 more
doaj   +1 more source

Evaluating Landslide Susceptibility Using Sampling Methodology and Multiple Machine Learning Models

open access: yesISPRS International Journal of Geo-Information, 2023
Landslide susceptibility assessment (LSA) based on machine learning methods has been widely used in landslide geological hazard management and research.
Yingze Song   +7 more
doaj   +1 more source

Selecting the Suitable Resampling Strategy for Imbalanced Data Classification Regarding Dataset Properties. An Approach Based on Association Models

open access: yesApplied Sciences, 2021
In many application domains such as medicine, information retrieval, cybersecurity, social media, etc., datasets used for inducing classification models often have an unequal distribution of the instances of each class.
Mohamed S. Kraiem   +2 more
doaj   +1 more source

Millimeter-Wave InSAR Image Reconstruction Approach by Total Variation Regularized Matrix Completion

open access: yesRemote Sensing, 2018
Millimeter-wave interferometric synthetic aperture radiometer (InSAR) can provide high-resolution observations for many applications by using small antennas to achieve very large synthetic aperture.
Yilong Zhang   +4 more
doaj   +1 more source

PSU: Particle Stacking Undersampling Method for Highly Imbalanced Big Data

open access: yesIEEE Access, 2020
Imbalanced classes are a common problem in machine learning, and the computational costs required for proper resampling increases with the data size. In this study, a simple and effective undersampling method, named particle stacking undersampling (PSU ...
Yong-Seok Jeon, Dong-Joon Lim
doaj   +1 more source

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