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All Journal Emerging Science Journal
Dadang Hermawan
Department of Digital Bussines, Faculty Bussines and Vocation, Institut Teknologi dan Bisnis STIKOM Bali Denpasar 80234,
Environmental Science

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Journal : Emerging Science Journal

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IRS-BAG-Integrated Radius-SMOTE Algorithm with Bagging Ensemble Learning Model for Imbalanced Data Set Classification Lilis Yuningsih; Gede Angga Pradipta; Dadang Hermawan; Putu Desiana Wulaning Ayu; Dandy Pramana Hostiadi; Roy Rudolf Huizen
Emerging Science Journal Vol 7, No 5 (2023): October
Publisher : Ital Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/ESJ-2023-07-05-04

Abstract

Imbalanced learning problems are a challenge faced by classifiers when data samples have an unbalanced distribution among classes. The Synthetic Minority Over-Sampling Technique (SMOTE) is one of the most well-known data pre-processing methods. Problems that arise when oversampling with SMOTE are the phenomenon of noise, small disjunct samples, and overfitting due to a high imbalance ratio in a dataset. A high level of imbalance ratio and low variance conditions cause the results of synthetic data generation to be collected in narrow areas and conflicting regions among classes and make them susceptible to overfitting during the learning process by machine learning methods. Therefore, this research proposes a combination between Radius-SMOTE and Bagging Algorithm called the IRS-BAG Model. For each sub-sample generated by bootstrapping, oversampling was done using Radius SMOTE. Oversampling on the sub-sample was likely to overcome overfitting problems that might occur. Experiments were carried out by comparing the performance of the IRS-BAG model with various previous oversampling methods using the imbalanced public dataset. The experiment results using three different classifiers proved that all classifiers had gained a notable improvement when combined with the proposed IRS-BAG model compared with the previous state-of-the-art oversampling methods. Doi: 10.28991/ESJ-2023-07-05-04 Full Text: PDF
Co-Authors Dandy Pramana Hostiadi Gede Angga Pradipta, Gede Angga Lilis Yuningsih Putu Desiana Wulaning Ayu Roy Rudolf Huizen