The Retraining Decision: Cost of Drift vs Cost of Retraining
This lesson is part of the course
In this lesson
You put a dollar figure on the drift (excess credit losses), compare it with the one-off cost of retraining and let a payback rule decide: retrain now or keep monitoring.
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Lessons in this course
- Baseline vs Current: Binning a Feature with COUNTIFS & FREQUENCY Locked
- Population Stability Index (PSI) per Feature, with Thresholds Locked
- Kolmogorov–Smirnov: Cumulative Distributions & the Largest Gap (with a Chart) Locked
- Categorical Drift: Chi-Square Test & Jensen–Shannon Divergence Locked
- Prediction Drift: The Score Distribution Month by Month (with a Chart) Locked
- Performance Decay Once Labels Arrive: Precision, Recall & an AUC Proxy Locked
- Alert Rules & a Monitoring Dashboard with Traffic Lights Locked
- The Retraining Decision: Cost of Drift vs Cost of Retraining Locked