Resistance Spot Welding Optimization Based on Artificial Neural Network

Table 4

Calculation of the mean squared error (MSE) case of 20-unit experiment.

Number	Shear strength (kN)	ANN prediction	Squared error	Number	Shear strength (kN)	ANN prediction	Squared error	Number	Shear strength (kN)	ANN prediction	Squared error
1	3.598	3.8369	0.057073	8	3.611	3.6838	0.0053	15	3.626	3.6838	0.003341
2	3.485	3.0774	0.166138	9	3.585	3.669	0.007056	16	3.623	3.76	0.018769
3	3.505	3.592	0.007569	10	3.623	3.76	0.018769	17	3.623	3.76	0.018769
4	3.458	3.669	0.044521	11	3.572	2.9412	0.397909	18	3.802	3.9422	0.019656
5	3.848	3.8369	0.000123	12	3.566	3.592	0.000676	19	3.836	3.8369	0.000000
6	3.878	3.9422	0.004122	13	3.84	3.9422	0.010445	20	3.485	3.0774	0.166138
7	3.585	3.669	0.007056	14	3.525	3.592	0.004489
MSE = 0.047896