Stress Classification by Multimodal Physiological Signals Using Variational Mode Decomposition and Machine Learning

Table 2

Classification results for the percentage split.

Sets	Statistical parameters	MPLN	SVM	MPLN	SVM	MPLN	SVM
		Modes 1-4		Modes 5-8		Modes 1-8
Good performer vs. bad performer	Sensitivity	97.2	61.23	98	68.67	98	70.65
	Specificity	96.3	65.12	98	68.67	98	70.65
	Accuracy	97.2	61.23	98	68.67	98	70.65
	F-measure	0.95	0.65	0.97	0.57	1	0.69
	Kappa statistics	0.94	0.63	0.98	0.56	0.99	0.69
Good performer vs. bad performer (female)	Sensitivity	78.56	62.34	81.67	68.67	83.78	69.67
	Specificity	78.9	62.37	82.23	68.67	83.67	69.67
	Accuracy	76.56	62.78	81.78	68.67	83.67	69.67
	F-measure	0.67	0.64	0.82	0.65	0.87	0.67
	Kappa statistics	0.68	0.63	0.82	0.65	0.88	0.69
Good performer vs. bad performer (male)	Sensitivity	79.56	63.43	80.21	68.67	82.67	70.02
	Specificity	78.78	63.56	80.12	68.67	82.56	70.02
	Accuracy	78.67	63.56	80.32	68.67	82.67	70.02
	F-measure	0.87	0.65	0.79	0.68	0.83	0.69
	Kappa statistics	0.87	0.65	0.79	0.67	0.83	0.69
Good performer vs. bad performer (frontal region)	Sensitivity	98	70.78	98.45	70.67	99	72.67
	Specificity	98	78.78	98.45	70.67	99	72.67
	Accuracy	98	67.89	98.45	70.67	99	72.67
	F-measure	0.98	0.74	0.99	0.69	1	0.71
	Kappa statistics	1	0.78	1	0.7	1	0.71
Good performer vs. bad performer (temporal region)	Sensitivity	99.8	67.78	99.99	61.23	99.99	75.56
	Specificity	97.78	67.78	99.99	65.12	99.99	75.56
	Accuracy	99.8	67.78	99.99	61.23	99.99	75.56
	F-Measure	0.99	0.74	0.99	0.59	1	0.72
	Kappa statistics	1	0.74	1	0.59	1	0.76
Good performer vs. bad performer (occipital region)	Sensitivity	78.56	60	80.23	62.34	89.34	76.7
	Specificity	78.9	60	80.34	62.37	89.43	76.7
	Accuracy	76.56	60	80.32	62.78	89.34	76.7
	F-measure	0.88	0.58	0.89	0.62	0.85	0.74
	Kappa statistics	0.85	0.58	0.86	0.62	0.85	0.74
Good performer vs. bad performer (central region)	Sensitivity	75.78	64.67	79.78	63.43	80.56	68.78
	Specificity	76.89	64.67	79.56	63.56	80.56	68.78
	Accuracy	78.67	64	79.34	63.56	80.56	68.78
	F-measure	0.76	0.67	0.75	0.62	0.83	0.56
	Kappa statistics	0.78	0.65	0.78	0.62	0.83	0.56