[Retracted] Application of BP Neural Network Model in Risk Evaluation of Railway Construction

Table 11

Validation results of BP neural network on construction risk of railways in 5 European countries.

NO.	16	17	18	19	20
Expert mark	0.620	0.725	0.651	0.589	0.713
Training results	0.590	0.761	0.682	0.569	0.686
Error (%)	4.91	4.97	4.76	3.44	3.76