Integration of type-2 fuzzy clustering and wavelet transform in a neural network based ECG classifier

Authors:
Yüksel Özbay;Rahime Ceylan;Bekir Karlik
Affiliations:
Department of Electrical and Electronics Engineering, Mevlana University, Konya, Turkey;Department of Electrical and Electronics Engineering, Selcuk University, Konya, Turkey;Department of Computer Engineering, Mevlana University, Konya, Turkey
Venue:
Expert Systems with Applications: An International Journal
Year:
2011

Citing 16
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Abstract

This paper presents a new automated diagnostic system to classification of electrocardiogram (ECG) arrhythmias. The diagnostic system is executed using type-2 fuzzy c-means clustering (T2FCM) algorithm, wavelet transform (WT) and neural network. Method of combining T2FCM and WT is used to improve performance of neural network. We aimed high accuracy rate to classification of ECG beats and constituted the automated diagnostic system to improve of classifier's performance. Ten types of ECG beats selected from MIT-BIH database were used to train the system. Then, this system was tested by the ECG signals of patients. The classification accuracy of the proposed classifier, type-2 fuzzy clustering wavelet neural network (T2FCWNN), is compared with the structures formed by type-1 FCM and WT. Process of T2FCWNN architecture is realized on three stages. First stage is formed the new training set obtained by selection of the best segments for each arrhythmia class using T2FCM. Second stage is feature extraction by WT on the new training set. Third stage is classification of the extracted features using neural network. The research showed that accuracy rate was found as 99% using this system.