Results 11 to 20 of about 111,551 (360)

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

open access: yesInf., 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.
Tarid Wongvorachan, Surina He, O. Bulut
semanticscholar   +1 more source

A theoretical distribution analysis of synthetic minority oversampling technique (SMOTE) for imbalanced learning

open access: yesMachine-mediated learning, 2023
Class imbalance occurs when the class distribution is not equal. Namely, one class is under-represented (minority class), and the other class has significantly more samples in the data (majority class).
Dina Elreedy, A. Atiya, Firuz Kamalov
semanticscholar   +1 more source

Oversampled Adaptive Sensing [PDF]

open access: yes2018 Information Theory and Applications Workshop (ITA), 2018
We develop a Bayesian framework for sensing which adapts the sensing time and/or basis functions to the instantaneous sensing quality measured in terms of the expected posterior mean-squared error. For sparse Gaussian sources a significant reduction in average sensing time and/or mean-squared error is achieved in comparison to non-adaptive sensing. For
Ralf R. Muller   +2 more
openaire   +3 more sources

Efficient Hybrid Oversampling and Intelligent Undersampling for Imbalanced Big Data Classification [PDF]

open access: yesExpert systems with applications, 2023
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.
Carla Vairetti   +2 more
semanticscholar   +1 more source

The balancing trick: Optimized sampling of imbalanced datasets—A brief survey of the recent State of the Art

open access: yesEngineering Reports, 2021
This survey paper focuses on one of the current primary issues challenging data mining researchers experimenting on real‐world datasets. The problem is that of imbalanced class distribution that generates a bias toward the majority class due to ...
Dr. Seba Susan, Amitesh Kumar
doaj   +1 more source

FAWOS: Fairness-Aware Oversampling Algorithm Based on Distributions of Sensitive Attributes

open access: yesIEEE Access, 2021
With the increased use of machine learning algorithms to make decisions which impact people’s lives, it is of extreme importance to ensure that predictions do not prejudice subgroups of the population with respect to sensitive attributes such as ...
Teresa Salazar   +3 more
doaj   +1 more source

Ensemble Deep Learning for the Detection of COVID-19 in Unbalanced Chest X-ray Dataset

open access: yesApplied Sciences, 2021
The ongoing COVID-19 pandemic has caused devastating effects on humanity worldwide. With practical advantages and wide accessibility, chest X-rays (CXRs) play vital roles in the diagnosis of COVID-19 and the evaluation of the extent of lung damages ...
Khin Yadanar Win   +3 more
doaj   +1 more source

Garbage Classification Using Ensemble DenseNet169

open access: yesJurnal RESTI (Rekayasa Sistem dan Teknologi Informasi), 2021
Garbage is a big problem for the sustainability of the environment, economy, and society, where the demand for waste increases along with the growth of society and its needs.
Ulfah Nur Oktaviana, Yufis Azhar
doaj   +1 more source

The oversampling phasing method [PDF]

open access: yesActa Crystallographica Section D Biological Crystallography, 2000
Sampling the diffraction pattern of a finite specimen more finely than the Nyquist frequency (the inverse of the size of the diffracting specimen) corresponds to surrounding the electron density of the specimen with a no-density region. When the no-density region is bigger than the electron-density region, sufficient information is recorded so that the
J, Miao, J, Kirz, D, Sayre
openaire   +2 more sources

Adaptive neighbor synthetic minority oversampling technique under 1NN outcast handling [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2017
SMOTE is an effective oversampling technique for a class imbalance problem due to its simplicity and relatively high recall value. One drawback of SMOTE is a requirement of the number of nearest neighbors as a key parameter to synthesize instances ...
Wacharasak Siriseriwan   +1 more
doaj   +1 more source

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