Recalibration
Platt, isotonic, temperature and beta calibration — how to choose, and the measured cost of recalibrating a model that was already fine.
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Macro Shifts
Eight features, not one of them past its noise floor, and their mean correlation has gone from +0.0016 to +0.1985.
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Drift Guardrails
An intercept change is not pure label shift. The example separates the assumptions behind log-odds correction from an AUC-drop gate.