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An efficient and automatic ECG arrhythmia diagnosis system using DWT and HOS features and entropy- based feature selection procedure


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Fig. 1

Block diagram of the proposed technique.
Block diagram of the proposed technique.

Fig. 2

Example of five different categories of heartbeats that are denoised and segmented.
Example of five different categories of heartbeats that are denoised and segmented.

Classification results of the proposed methods with the two different classifiers.

ClassifierSensitivity (%)Specificity (%)Accuracy (%)
SVM-RBF99.5799.8999.83
NN97.5899.3999.03

– Comparison of the classification efficiency of the proposed method and some of studies performed based on the same database.

LiteratureyearFeaturesClassifierClassesAccuracy (%)
Martis et al. [20]2012PCASVM-RBF598.11%
Martis et al. [14]2013DWT + PCASVM-RBF596.92%
DWT + PCANN598.78%
Osowski and Linh [19]2001HOSHybrid fuzzy796.06%
NN
Martis et al. [27]2013Cumulant + PCANN594.52%
Elhaj et al. [24]2016PCA + DWT + HOS +SVM-RBF598.91%
ICA
NN598.90%
Acharya et al [28]2017Raw dataCNN594.03
Yang et al. [29]2018PCAnetLinear SVM597.94
Oh et al. [30]2018Raw dataCNN-LSTM598.10
ProposedDWT+HOSSVM-RBF599.83
NN599.03

A summary table of ECG heartbeats classified as per ANSI/AAMI EC57:1998 standard [25].

ANSI/AAMI classesNon-ectopic (N)Supraventricular (S)Ventricular (V)Fusion (F)Unknown (U)
Normal (N)Aberrated atrial premature (A)Ventricular escape (V)Fusion of ventricular and normal (F)Unclassifiable (U)
Left bundle branch block (LBBB)Atrial premature (a)Premature ventricular contraction (E)Paced (p)
MIT-BIH classesRight bundle branch block (RBBB)Supraventricular premature (S)Fusion of paced and normal (f)
Nodal (junctional) escape (j)Nodal (junctional) premature (J)
Atrial escape beat (e)