Table 2 Metric score of recursive STA/LTA model.

From: Unsupervised anomaly detection for earthquake detection on Korea high-speed trains using autoencoder-based deep learning models

Threshold

Metric

PGA value (Unit: G)

 ≥ 0.01

 ≥ 0.03

 ≥ 0.05

 ≥ 0.07

 ≥ 0.1

 ≥ 0.15

2σ

FAR

0.998

MAR

0.000

0.000

0.000

0.0000

0.000

0.000

F1

0.667

0.668

0.667

0.668

0.667

0.667

3σ

FAR

0.454

MAR

0.089

0.062

0.036

0.022

0.000

0.000

F1

0.769

0.794

0.796

0.804

0.815

0.809

4σ

FAR

0.243

MAR

0.178

0.109

0.064

0.029

0.000

0.000

F1

0.801

0.835

0.861

0.883

0.888

0.885

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