Damage Simulation and Ultrasonic Detection of Asphalt Mixture under the Coupling Effects of Water-Temperature-Radiation

Table 3

Regression and prediction results of SVM, BP, and grey theory.

Conditions	Groups number	Square error (%)			Prediction error (%)
		SVM	BP neural network	Grey theory	SVM	BP neural network	Grey theory
20°C	A	0.010	0.029	0.089	1.09	0.92	25.76
	B	0.006	0.021	0.068	5.33	3.45	13.69
	C	0.004	0.019	0.091	8.62	7.19	8.50
	D	0.012	0.048	0.062	2.20	3.20	12.02
	E	0.013	0.043	0.064	2.83	6.28	17.57
0°C	A	0.012	0.038	0.103	9.63	2.92	12.03
	B	0.007	0.028	0.072	4.49	4.99	22.48
	C	0.010	0.018	0.071	0.59	4.46	23.19
	D	0.010	0.027	0.074	5.48	12.22	10.15
	E	0.010	0.033	0.053	0.04	4.44	13.59
−20°C	A	0.010	0.028	0.093	6.63	23.80	9.02
	B	0.012	0.036	0.073	0.69	2.80	8.63
	C	0.006	0.019	0.035	7.91	0	16.05
	D	0.004	0.011	0.093	2.56	4.38	9.69
	E	0.011	0.033	0.073	1.42	15.74	12.37
Water-saturated state	A	0.010	0.039	0.094	9.42	13.99	9.68
	B	0.012	0.045	0.096	5.14	4.49	7.10
	C	0.008	0.030	0.032	5.77	11.77	25.98
	D	0.004	0.011	0.085	4.87	4.15	7.71
	E	0.007	0.016	0.100	5.90	2.26	18.64