P61Feature EngineeringIntermediateDiagnose12 min
Diagnose Leakage From a Post-Outcome Feature
Identify a feature available only after the outcome.
#diagnose#leakage
Scenario
A Monday late-payment model includes collection_closed_reason, recorded after payment or write-off; AUC rises from 0.71 to 0.93.
Problem statement
Diagnose the timing failure.
Your Task
- Identify leakage.
- Explain inflated performance.
- Define a cutoff.
Related Concepts
LeakageValidation
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