[Retracted] K-Means Algorithm to Identify the Elderly Psychological Stress Analysis Algorithm

Table 2

Classification results of three classifiers in relaxation and different stress states.

State	Classifier	Main parameter	Accuracy
Relaxed/low-pressure state	KNN	K = 7	59.38
	LR	penalty = ′12′, tol = 0.0001	74.43
	RFC	Tree_nums = 1000, Mtry = 4	72.35
Relaxed/medium-pressure state	KNN	K = 7	63.46
	LR	Penalty = ′12′, tol = 0.0001	88.94
	RFC	Tree_nums = 1000, Mtry = 4	90.03
Relaxed/high-pressure state	KNN	K = 7	78.51
	LR	Penalty = ′12′, tol = 0.0001	92.45
	RFC	Tree_nums = 1000, Mtry = 4	89.88