Ensemble Classifiers and Feature-Based Methods for Structural Damage Assessment

Table 6

Classification accuracy of the selected feature subset obtained by using different feature extraction methods for the IASC-ASCE SHM benchmark structure (for sensor 2).

Signal processing technique	Optimal feature set	Accuracy (%)	Optimal feature set	Accuracy (%)
	Damage pattern (a)		Damage pattern (c)
STFT	S7	100	S3	100
Fast-ST	S3	100	S9	100
WT	S2	100	S2	100
SWT	S1	100	S3	100
EWT	S10, S2, S9	63.4	S7	99.7
	Damage pattern (b)		Damage pattern (d)
STFT	S3	100	S3, S10	86.4
Fast-ST	S10	100	S10, S3	78.5
WT	S2	100	S2	87.2
SWT	S3	100	S9, S2, S10	91.6
EWT	S7	93.5	S6, S2	57.3