Strength Model of Cemented Filling Body Based on a Neural Network Algorithm

Table 5

Bias of the forecast network model.

Unit	1	2	3	4	5	6	7	Threshold
σ1	−6.4804	−9.7406	2.1048	2.7687	1.9601	−0.0269	−2.0824	4.3262
σ2	−4.6311	−7.1581	4.2533	7.5672	4.8398	0.0407	−2.4205	3.6850
σ3	−1.9478	−3.1003	7.3515	13.7130	8.8068	0.1279	−3.9305	3.1902