Using ambient vibration measurements for risk assessment at an urban scale: from numerical proof of concept to Beirut case study (Lebanon)

Earth, Planets and Space

Table 1 Performance indicators (RMSE, R ²) and synaptic weights (lines) for the three ANN models (columns) for building class 3

	Model 1 Velocity contrast, linear site response	Model 2 H/V amplitude, linear site response	Model 3 Velocity contrast, nonlinear site response
Site amplification proxy	C = V _smax/V _smin	A _0HV	C = V _smax/V _smin
Performance indicators
Δ(DI) standard deviation (initial value: 0.1724)	0.112	0.099	0.103
Standard deviation reduction (%)	35%	43%	40%
Coefficient of determination R ²	0.81	0.86	0.82
Synaptic weights
f _struct/f _soil	0.51	0.51	0.51
Site amplification proxy	0.19	0.20	0.16
PGA	0.30	0.29	0.33