Your 95% CV score might be fake — I built a framework that fixes the hidden leakage in AutoML
This story is from 2026-08-27. It is preserved in the archive; the latest stories are on the live feed.
Ever shipped a model with 95% CV accuracy, only to watch it crash in production? The culprit: Data leakage in preprocessing. The imputation means and scaling stds were computed on the \*entire\* dataset before train/test split. Most AutoML tools do this silently. What I built: A lightweight, leakag…
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Timeline · 2 reports
- 2026-08-28 09:45 · r/learnmachinelearning
Your 95% CV score might be fake — I built a framework that fixes the hidden leakage in AutoML - 2026-08-27 22:16 · r/MLQuestions
Your 95% CV score might be fake — I built a framework that fixes the hidden leakage in AutoML