Isomap-Based Three-Dimensional Operational Modal Analysis

Table 10

Comparison of modal ratios for different neighbor numbers K.

Real order		1	2	3	4	5	7
Identify order		2	1	3	4	6	5
K = 12	LSMS	0.0201	0.0186	0.0272	0.0216	0.0846	0.0294
	DMA	0.0286	0.0195	0.0211	0.0216	0.0668	0.0284
K = 40	LSMS	0.0204	0.0187	0.0270	0.0216	0.1140	0.0282
	DMA	0.0286	0.0196	0.0210	0.0214	0.0678	0.0277
K = 200	LSMS	0.0204	0.0187	0.0270	0.0213	0.0702	0.0275
	DMA	0.0285	0.0196	0.0210	0.0212	0.0317	0.0275
K = 500	LSMS	0.0204	0.0187	0.0271	0.0212	0.0560	0.0274
	DMA	0.0285	0.0196	0.0210	0.0211	0.0364	0.0274
K = 800	LSMS	0.0204	0.0188	0.0271	0.0212	0.0592	0.0274
	DMA	0.0286	0.0196	0.0210	0.0211	0.0359	0.0274