Question library
Questions from real interviews. Drill any of them by voice in a couple of minutes, with an interviewer, a score and feedback.
You trained a churn prediction model, the ROC AUC on validation is 0.97, but after deploying to production the quality is much worse. What causes would you check?Mid-levelA churn model showed a ROC-AUC of 0.93 on validation, but after it went into production, retention based on its recommendations didn't improve, and quality on fresh data is much lower. What causes would you check?Senior