Sensitivity Analysis of the Artificial Neural Network Outputs in Friction Stir Lap Joining of Aluminum to Brass

Table 2

Summary of different networks evaluated to yield the criteria of network performance.

No.	Activation function		Neurons in hidden layer	Training MRE	Testing MRE
	Hidden layer	Output layer
1	logsig	logsig	4	1.6	2.8
2	logsig	logsig	5	1.2	3.7
3	logsig	logsig	6	0.45	2.1
4	logsig	purline	5	2	4.5
5	logsig	purline	6	1.63	3.52
6	logsig	purline	7	1.27	3.81
7	logsig	tansig	6	1.54	2.87
8	logsig	tansig	7	2.67	2.34
9	purlin	logsig	6	0.89	2.9
10	purlin	logsig	7	0.75	2.3
11	tansig	purline	6	1.35	2.74
12	tansig	purline	7	1.72	3.37