ECG	electrocardiogram
SVM	support vector machine
RF	random forest
KNN	K-nearest neighbors
LD	linear discriminant
MLP	multilayer perceptron
NOR	normal beat
MI	myocardial infarction Beat
HRV	heart rate variability
EMG	electromyography
CVDs	cardiovascular diseases
FeEx	feature extraction
CM	classifier model
Se	sensitivity
$P{e}^{+}$	positive predictive
Sp	specificity
Ref	reference