RETRACTED: Online Intelligent Identification of Modal Parameters for Large Cable-Stayed Bridges

Table 3

Comparison between improved EEMD results and real values (Hz).

Model order	True value [23]	March	July	October	December	Average	Tolerance	Percentage difference (%)
First	0.1856	0.1845	0.1851	0.1845	0.1849	0.1847	0.0009	0.46
Second	0.2191	0.2217	0.2378	0.2200	0.2378	0.2293	0.0102	3.22
Third	0.4531	0.4624	0.4635	0.4634	0.4644	0.4634	0.0103	2.28
Fourth	0.5746	0.5542	0.5554	0.5546	0.5389	0.5508	0.0238	4.15
Fifth	0.6928	0.6911	0.7087	0.7062	0.6858	0.6979	0.0051	0.74