Prediction of the Frost Resistance of Iron Ore Tailings Concrete Based-BP Neural Network

Table 4

Network connection weights and thresholds.

Weight	Hidden layer node j
	1	2	3	4	5
Input node i	2.2037	1.8123	−2.5519	1.9838	0.678
	2.0172	2.0839	1.1672	−2.34	2.9169
Output node j	0.195	−0.4496	0.1087	−0.423	−0.3131
Threshold b	−2.915	−2.9141	2.3843	−1.726	−1.4256
Weight	Hidden layer node j
	6	7	8	9	10
Input node i	−1.8732	−2.294	0.5643	2.5209	2.9116
	2.0666	1.9739	2.9156	1.5457	−0.574
Output node j	−0.4917	0.0442	−0.1264	0.0798	−0.1196
Threshold b	1.523	0.7567	−0.3597	−0.0559	0.0759
Weight	Hidden layer node j
	11	12	13	14	15
Input node i	−2.6966	2.4388	2.7468	−0.3475	2.4366
	1.193	−1.6064	1.0815	−2.8548	−1.7603
Output node j	−0.093	−0.0417	0.0173	0.3423	0.0956
Threshold b	−0.5301	0.9058	1.1543	−1.4015	1.8596
Weight	Hidden layer node j
	16	17	18		Output node
Input node i	−1.8418	−0.5537	2.4726		1
	−2.3311	−2.9149	1.7912		−0.2495
Output node j	0.0483	−0.0044	0.1191
Threshold b	−2.2607	−2.6125	2.8479