Prediction of Mechanical Properties of Aluminium Alloy Strip Using the Extreme Learning Machine Model Optimized by the Gray Wolf Algorithm

Table 4

Comparison of different activation functions.

Name	MSE			MAPE
	Train set	Test set	All	Train set	Test set	All
Sigmoid	316.72	594.99	401.68	8.02	10.45	8.76
tanh	498.75	1052.36	667.79	10.25	14.29	11.49
Linear	196.76	2544.63	913.65	7.55	13.10	9.25
rbf_l1	18150.11	22051.90	19341.50	49.48	52.97	50.54
rbf_l2	405.53	901.78	557.06	9.38	11.79	10.12