Ensemble Classifiers and Feature-Based Methods for Structural Damage Assessment

Table 1

Features from time-frequency domain.

Parameter	Equation
Spectral centroid
Spectral spread
Spectral skewness
Spectral kurtosis
Spectral rolloff
Spectral flux
Spectral decrease
Spectral slope
Spectral crest factor
Spectral flatness

is the magnitude spectrum (magnitudes of the STFT) of the input signal.