Isomap-Based Three-Dimensional Operational Modal Analysis

Table 8

Comparison of MAC for different neighbor numbers K.

Real order		1	2	3	4	5	7
Identify order		2	1	3	4	6	5
K = 12	LSMS	0.8850	0.6863	0.5591	0.4179	0.0003	0.6544
	DMA	0.6609	0.6198	0.7790	0.5221	0.0002	0.8877
K = 40	LSMS	0.8783	0.6837	0.5634	0.4238	0.0014	0.6495
	DMA	0.6564	0.6180	0.7817	0.5241	0.0049	0.8932
K = 200	LSMS	0.8800	0.6851	0.5632	0.4261	0.0050	0.6534
	DMA	0.6599	0.6208	0.7820	0.5260	0.0042	0.8981
K = 500	LSMS	0.8798	0.6851	0.5635	0.4262	0.0519	0.6532
	DMA	0.6594	0.6206	0.7824	0.5263	0.0213	0.8990
K = 800	LSMS	0.8796	0.6851	0.5636	0.4265	0.1423	0.6543
	DMA	0.6585	0.6201	0.7827	0.5271	0.0724	0.9007