~/talk

How to detect silent failures in ML models

Talkat Conf42 Machine Learning 2022 · on Thursday, 2022-05-19· [machine-learning, observability]
slides:none on file

Defines two concrete failure modes: data drift (change in input distribution) and concept drift (change in true mapping), and shows concept drift almost always breaks models. Uses the loan example with one-year label delay to argue labels are often unavailable, so performance is estimated by calibrating model probabilities and converting confidence shifts into an expected confusion matrix and metrics. Presents an open-source implementation that matched real ROC AUC on a California housing test, compares univariate tests (KS, chi-square) to multivariate reconstruction error via PCA and mean Euclidean distance, and lists false positives and interpretability limits.

AI-written summary · about

  1. 0:00Introduction
  2. 1:28Loan default prediction
  3. 2:31Data vs concept drift
  4. 6:05Monitor performance directly
  5. 7:49Ground truth challenges
  6. 9:55Confidence in performance
  7. 12:41Linking drops to data
  8. 13:44Feature-level drift detection
  9. 15:33Limitations of univariate drift
  10. 15:54Multivariate drift methods
  11. 21:10Summary
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