Results 21 to 30 of about 39,918 (213)

An Integrated Framework Based on Latent Variational Autoencoder for Providing Early Warning of At-Risk Students

open access: yesIEEE Access, 2020
The rapid development of learning technologies has enabled online learning paradigm to gain great popularity in both high education and K-12, which makes the prediction of student performance become one of the most popular research topics in education ...
Xu Du, Juan Yang, Jui-Long Hung
doaj   +1 more source

Deep Neural Network Ensemble for the Intelligent Fault Diagnosis of Machines Under Imbalanced Data

open access: yesIEEE Access, 2020
Imbalanced classification using deep learning has attracted much attention in intelligent fault diagnosis of machinery. However, the existing methods use individual deep neural network to extract features and recognize the health conditions under ...
Feng Jia   +3 more
doaj   +1 more source

SMOTE-LOF for noise identification in imbalanced data classification

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
Imbalanced data typically refers to a condition in which several data samples in a certain problem is not equally distributed, thereby leading to the underrepresentation of one or more classes in the dataset.
Asniar   +2 more
doaj   +1 more source

Boundary expansion algorithm of a decision tree induction for an imbalanced dataset [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2017
A decision tree is one of the famous classifiers based on a recursive partitioning algorithm. This paper introduces the Boundary Expansion Algorithm (BEA) to improve a decision tree induction that deals with an imbalanced dataset.
Kesinee Boonchuay   +2 more
doaj   +1 more source

Plant Identification in a Combined-Imbalanced Leaf Dataset

open access: yesIEEE Access, 2022
Plant identification has applications in ethnopharmacology and agriculture. Since leaves are one of a distinguishable feature of a plant, they are routinely used for identification. Recent developments in deep learning have made it possible to accurately
Viraj K. Gajjar   +2 more
doaj   +1 more source

Classification Problem in Imbalanced Datasets

open access: yes, 2020
La classification est une tâche d'exploration de données. Elle vise à extraire des connaissances à partir de grands ensembles de données. Il existe deux types de classification. La première est connue sous le nom de classification complète, et elle est appliquée à des ensembles de données équilibrés. Cependant, lorsqu'elle est appliquée à des ensembles
Aouatef, Mahani,, Baba, Ali, Ahmed Riad
openaire   +3 more sources

A Cost-Sensitive Ensemble Method for Class-Imbalanced Datasets

open access: yesAbstract and Applied Analysis, 2013
In imbalanced learning methods, resampling methods modify an imbalanced dataset to form a balanced dataset. Balanced data sets perform better than imbalanced datasets for many base classifiers.
Yong Zhang, Dapeng Wang
doaj   +1 more source

Is Diabetic Retinopathy Grading Biased by Imbalanced Datasets?

open access: yes, 2022
Diabetic retinopathy (DR) is one of the most severe complications of diabetes and the leading cause of vision loss and even blindness. Retinal screening contributes to early detection and treatment of diabetic retinopathy. This eye disease has five stages, namely normal, mild, moderate, severe and proliferative diabetic retinopathy.
Monteiro, Fernando C., Rufino, José
openaire   +3 more sources

Adaptation Proposed Methods for Handling Imbalanced Datasets based on Over-Sampling Technique

open access: yesAl-Mustansiriyah Journal of Science, 2020
Classification of imbalanced data is an important issue. Many algorithms have been developed for classification, such as Back Propagation (BP) neural networks, decision tree, Bayesian networks etc., and have been used repeatedly in many fields.
Liqaa M. Shoohi, Jamila H. Saud
doaj   +1 more source

Distribution-sensitive learning for imbalanced datasets [PDF]

open access: yes2013 10th IEEE International Conference and Workshops on Automatic Face and Gesture Recognition (FG), 2013
Many real-world face and gesture datasets are by nature imbalanced across classes. Conventional statistical learning models (e.g., SVM, HMM, CRY), however, are sensitive to imbalanced datasets. In this paper we show how an imbalanced dataset affects the performance of a standard learning algorithm, and propose a distribution-sensitive prior to deal ...
Song, Yale   +2 more
openaire   +3 more sources

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