Table 6.

Comparative results of knee joint angle indexes during going upstairs.

Algorithm	RMSE	MAE	R2
CS-RF	4.0860	2.8571	0.9700
RF	6.3228	3.9982	0.9030
SVR	11.4990	8.2134	0.8824
BP	10.0615	6.9319	0.7544