Table 3.

Predictive and extrapolation powers of the QSAR models derived by ANN approach.

	RT2	RMSET	Rv2	RMSEV
ANN 3-layers	0.75	0.54	0.48	0.68
ANN 4-layers	0.81	0.47	0.71	0.51
ANN 5-layers	0.76	0.53	0.64	0.56
ANN 6-layers	0.84	0.43	0.78	0.46
ANN 7-layers	0.90	0.34	0.85	0.39
ANN 8-layers	0.86	0.40	0.62	0.66
ANN 9-layers	0.92	0.29	0.90	0.32
ANN 10-layers	0.90	0.34	0.78	0.47
ANN 11-layers	0.91	0.32	0.72	0.62
ANN 12-layers	0.88	0.37	0.82	0.40
ANN 13-layers	0.86	0.40	0.74	0.51