Estimation of the Dynamic Moduli of Viscoelastic Asphalt Mixtures Using the Extended Kalman Filter Algorithm

Table 4

Improvement of EKF algorithm.

	UTM			IRT
	Regression	EKF algorithm	Improvement	Regression	EKF algorithm	Improvement
	2.36	2.36	—	2.36	2.52	—
	2.01	2.01		2.01	1.86
	1.62	1.71		1.98	1.86
	0.47	0.44		0.48	0.49
RMSE	491.18	481.62	9.56	902.29	901.65	0.64
MPE	0.081	0.067	0.014	0.0524	0.0470	0.0054
R square	0.9969	0.9971	0.0002	0.9138	0.9140	0.0002