Wrapper Subset Feature Selection for Optimal Feature Selection in Epileptic Seizure Signal Classification

Wijayanto, Inung and Hartanto, Rudy and Nugroho, Hanung Adi (2021) Wrapper Subset Feature Selection for Optimal Feature Selection in Epileptic Seizure Signal Classification. Lecture Notes in Electrical Engineering, 746 LN. 567 – 577. ISSN 18761100

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Abstract

Epilepsy is diagnosed by assessing the brain signal using an electroencephalograph (EEG). The assessment relies on manual visual inspection, which required experience and years of training. A computer-aided diagnose system can help neurologists assess the EEG signal. This study explores the epileptic condition by decomposing EEG signals using three levels of wavelet packet decomposition (WPD). Three orders of Daubechies mother wavelets are used. Since EEG is a non-stationary biological signal, an entropy measurement using the Shannon entropy is used to extract the signals’ information. The next process is combining the features from all levels of the decomposed signals producing 14 number of features. This study reduces the number of features using the wrapper feature subset selection (WFSS) method. The searching algorithm used is the sequential backward (SBS) and forward (SFS) selection method. The multilayer perceptron neural network (MLPNN) is used for the classification method. The system achieves the highest accuracy of 91 by using seven number of features obtained from WPD(db2) + WFSS(SBS) + MLPNN. The minimum number of features is obtained using WPD(db16) + WFSS(SFS) + MLPNN, which produces six features. While the use of WFSS(SFS) in db16 produces six features with the highest increase of accuracy by 22. This indicates that the use of WFSS can obtain an optimal number of features set and can improve the system’s performance. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

Item Type: Article
Additional Information: Cited by: 0
Uncontrolled Keywords: Biomedical engineering; Biomedical signal processing; Discrete wavelet transforms; Electroencephalography; Electronic medical equipment; Medical informatics; Multilayer neural networks; Wavelet decomposition; Classification methods; Entropy measurement; Feature subset selection; Multi layer perceptron neural networks (MLPNN); Optimal feature selections; Searching algorithms; Signal classification; Wavelet packet decompositions; Feature extraction
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Electronics Engineering Department
Depositing User: Sri JUNANDI
Date Deposited: 05 Oct 2024 13:12
Last Modified: 05 Oct 2024 13:12
URI: https://ir.lib.ugm.ac.id/id/eprint/8774

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