Data Analysis for ML/AI
Features and leakage
Engineering features that generalize — and avoiding the leakage that wrecks models.
5 lessons
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Lessons in sequence
Work through these in order—each lesson builds on the previous one.
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Lesson 1 of 5
Feature construction: from raw to model-ready
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Lesson 2 of 5
Target leakage: when the future sneaks into training
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Lesson 3 of 5
Train/test contamination patterns
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Lesson 4 of 5
Feature importance and feature redundancy
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Lesson 5 of 5
A leakage audit checklist before shipping