Peak Ground Acceleration Prediction by Artificial Neural Networks for Northwestern Turkey

Table 4

R, RMSE, and MAE values of each ANN method for models (i), (ii), (iii), and (iv) in the test period.

Model	FFBP method			GRNN method			RBF method
	R	RMSE (cm/s/s)	MAE (cm/s/s)	R	RMSE (cm/s/s)	MAE (cm/s/s)	R	RMSE (cm/s/s)	MAE (cm/s/s)
(i)	0.998	5.52	4.06	0.872	37.35	16.69	0.362	58.17	27.50
(ii)	0.950	18.69	8.08	0.891	22.91	10.22	0.481	43.61	16.99
(iii)	0.999	13.55	5.60	0.971	8.10	2.85	0.219	30.71	11.91
(iv)	0.992	18.61	10.89	0.895	41.57	17.79	0.550	50.48	27.21