Deformation Prediction of a Deep Foundation Pit Based on the Combination Model of Wavelet Transform and Gray BP Neural Network

Table 7

Prediction of horizontal displacement based on gray BP network model after wavelet denoising.

Measured period	Measured displacement	Fitting value	Residual	Relative error (%)	Average error (%)
9	6.45	6.76	−0.31	4.81	4.32
10	6.67	6.88	−0.19	3.12
11	6.78	7.03	−0.25	3.65
12	6.87	7.26	−0.39	5.68