Data Leakage Can Make a Customer Churn Model Look Better Than It Is
A machine-learning model can produce impressive test results and still fail when it is used on new data. One reason is data leakage : information that would not be available at prediction time has found its way into the training or evaluation process. The model learns from clues about the answer, s…
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- 2026-11-14 10:11 · DEV Community — AI
Data Leakage Can Make a Customer Churn Model Look Better Than It Is