Risk Evaluation Model of Highway Tunnel Portal Construction Based on BP Fuzzy Neural Network

Table 5

Comparison of network test results.

Tunnel	Test results of the fuzzy neural network					Model result	Cumulative error	Realistic risk level
	Output 1	Output 2	Output 3	Output 4	Output 5
46	0.0000	0.0001	1.0000	0.0000	0.0000	0 0 1 0 0	0.01%	III
47	0.0000	0.0032	0.9992	0.0000	0.0000	0 0 1 0 0	0.40%	III
48	0.0000	0.0001	0.9497	0.0016	0.0000	0 0 1 0 0	5.20%	III
49	0.0000	0.0003	0.9854	0.0001	0.0000	0 0 1 0 0	1.50%	III
50	0.0000	0.9847	0.0149	0.0001	0.0015	0 1 0 0 0	3.18%	II