Prediction of Soil Deformation in Tunnelling Using Artificial Neural Networks

Table 4

Comparison between prediction results and in situ test data [49].

Test number	/mm				/m
	Prediction data	Test data	Absolute error	Relative error	Prediction data	Test data	Absolute error	Relative error
1	42.3	47.3	−5	−0.11	4.19	4.77	−0.58	−0.12
2	11.9	9.6	2.3	0.24	10.05	9.71	0.34	0.04
3	25.3	22	3.3	0.15	6.47	5.37	1.1	0.2
4	4.9	4.3	0.6	0.14	11.59	9.77	1.82	0.19
5	20.7	21.2	−0.5	−0.02	6.34	7.25	−0.91	−0.13
6	48.6	55.3	−6.7	−0.12	6.21	7.46	−1.25	−0.17