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Thresholds, Alerts and Drift

A threshold set from the cost of a miss against the cost of a false alarm rather than from a quantile, and the measurement showing that a fixed threshold reprices the alert queue whenever the anomaly rate moves.

IntermediateModule 328 min · 110 XP
A threshold sliding along a score distribution while a running cost total falls and then rises, and the same threshold held fixed as the anomaly rate doubles and halves beneath it.

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