Table 2. A comparison between previous studies and the current study.

Ref.	Feature extraction	Classification	Accuracy (%)
Panda, Chakladar & Dasgupta (2021)	PSD	LSTM-based DNN	94.81
Yulita et al. (2020)	Wavelet-PSD	PAMELA-CL-based KNN	85
Alimardani & Kaba (2021)	PSD	CNN	74.57
Proposed method	PSD + mRMR feature selection	RF	100
		DNN	99