Table 4. Selected criteria of the different multi-layer perceptron for Filter method .

Number of hidden neurons	R (all)	$$R_{train}^2$$	Q2	MSE (validation)
5	0.849	0.743	0.707	0.039
10	0.857	0.729	0.664	0.032
15	0.870	0.774	0.743	0.031
20	0.872	0.780	0.714	0.038
25	0.917	0.839	0.780	0.026
30	0.957	0.918	0.882	0.020
35	0.955	0.953	0.818	0.024
40	0.990	0.981	0.989	0.002
45	0.944	0.901	0.875	0.014
50	0.832	0.694	0.714	0.027