Effective weight matrix for the ANN model.

Input descriptors				Hidden neurons	Hidden to out
SIC1	R2e	EEig03d	ESpm14u
−1.0877	1.3881	0.0052	0.9426	H1	0.7219
1.8117	−1.3380	−1.8139	−2.1147	H2	−0.2206
3.6353	−0.7606	−1.5711	3.9892	H3	0.1505
2.2321	−2.9344	2.5124	3.6544	H4	0.5867
24.97	25.72	17.35	31.94	Relative importance (%)