Emerging Science Journal
Vol 6, No 2 (2022): April

Oversampling Approach Using Radius-SMOTE for Imbalance Electroencephalography Datasets

Retantyo Wardoyo (Department of Computer Science and Electronics, Faculty of Mathematics and Natural Science, Universitas Gadjah Mada, Yogyakarta 55281,)
I Made Agus Wirawan (Education of Informatics Engineering Department, Faculty of Engineering and Vocational, Universitas Pendidikan Ganesha, Singaraja 81116,)
I Gede Angga Pradipta (Department of Information Technology, Faculty Computer and Informatics, Institut Teknologi dan Bisnis STIKOM Bali, Denpasar 80234,)



Article Info

Publish Date
09 Mar 2022

Abstract

Several studies related to emotion recognition based on Electroencephalogram signals have been carried out in feature extraction, feature representation, and classification. However, emotion recognition is strongly influenced by the distribution or balance of Electroencephalogram data. On the other hand, the limited data obtained significantly affects the imbalance condition of the resulting Electroencephalogram signal data. It has an impact on the low accuracy of emotion recognition. Therefore, based on these problems, the contribution of this research is to propose the Radius SMOTE method to overcome the imbalance of the DEAP dataset in the emotion recognition process. In addition to the EEG data oversampling process, there are several vital processes in emotion recognition based on EEG signals, including the feature extraction process and the emotion classification process. This study uses the Differential Entropy (DE) method in the EEG feature extraction process. The classification process in this study compares two classification methods, namely the Decision Tree method and the Convolutional Neural Network method. Based on the classification process using the Decision Tree method, the application of oversampling with the Radius SMOTE method resulted in the accuracy of recognizing arousal and valence emotions of 78.78% and 75.14%, respectively. Meanwhile, the Convolutional Neural Network method can accurately identify the arousal and valence emotions of 82.10% and 78.99%, respectively. Doi: 10.28991/ESJ-2022-06-02-013 Full Text: PDF

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Journal Info

Abbrev

ESJ

Publisher

Subject

Environmental Science

Description

Emerging Science Journal is not limited to a specific aspect of science and engineering but is instead devoted to a wide range of subfields in the engineering and sciences. While it encourages a broad spectrum of contribution in the engineering and sciences. Articles of interdisciplinary nature are ...