Hydraulic Fracturing Breakdown Pressure and Prediction of Maximum Horizontal In Situ Stress

Table 4

Weights and biases for architecture 4-20-1 (connection between the input layer and the hidden layer).

	i				Biase
j	1	2	3	4
1	−3.53807	9.268259	−7.17399	−0.24051	−15.5494
2	−3.02559	1.006862	−0.21996	−5.82692	−0.01195
3	1.342326	−3.55285	6.887511	0.125229	10.42182
4	1.562083	1.238988	−0.03334	1.196745	0.259238
5	−1.04161	3.102813	0.328251	−0.17106	6.594556
6	−0.11475	0.312072	−41.5657	0.210951	16.69886
7	−0.6765	1.853829	−3.22049	−0.09116	−7.96169
8	−0.21442	0.428745	1.705243	0.037637	−17.3717
9	−4.08715	−3.98945	0.716476	1.205013	−0.02842
10	5.899117	0.047698	1.160357	0.956322	0.026681
11	0.176175	0.153813	2.847234	−1.29341	−0.09155
12	−5.88379	−2.50011	0.627514	0.944089	0.039742
13	−1.70439	4.679918	1.717556	−0.41326	−6.82134
14	−1.69151	4.671805	1.899788	−0.4117	6.946232
15	1.972419	1.972986	0.085152	2.518556	0.089088
16	4.56277	−1.37495	0.78727	2.345988	−0.08354
17	5.5936	6.217869	−1.11003	−0.77901	0.02463
18	0.833811	−2.21315	−4.62923	0.071668	14.10864
19	−2.46928	3.452933	2.615894	0.443599	−1.09289
20	−2.24478	−0.38311	−0.44552	−1.64596	−0.35027