Prediction of Bending Force in the Hot Strip Rolling Process Using Multilayer Extreme Learning Machine

Table 2

The RMSE of different activation functions and node number combinations of ELM.

Activation function	Number of hidden layer node
	10	40	80	90	100	140	180
Radbas	55.2617	19.0126	16.1132	15.8309	15.6568	15.2251	15.1812
Sin	55.2617	14.4886	13.9327	13.7969	13.9768	14.0701	14.4754
Sigmoid	55.2617	13.8739	13.7326	13.2417	13.7331	14.0202	14.3876
Hardlim	55.2617	23.6476	19.4240	18.5305	18.6029	17.5579	17.3333
Tribas	55.2617	24.0597	18.6536	18.1056	17.7518	17.1867	16.6234