[Retracted] Parameter Identification of 3D Elastic-Plastic Model for Tunnel Engineering Based on Improved Genetic Algorithm

Table 2

Identification results of the improved GA-SVR algorithm.

Side pressure coefficient		Deformation modulus relative error (%)	Poisson’s ratio		Poisson’s ratio relative error (%)	Dilation angle (°)		Relative error of dilation angle (%)
Actual value	Identification value		Actual value	Identification value		Actual value	Identification value
0.82	0.86	4.88	0.42	0.48	14.29	3.5	3.42	2.29
0.50	0.45	10.00	0.24	0.28	16.67	14.8	14.99	1.28
1.40	1.24	11.43	0.22	0.22	0.00	16.4	15.69	4.33
		8.77			10.32			2.63