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Feature Engineering

Encoding, missingness, selection, target leakage, and the train-serve skew that eats offline gains.

7concepts
145flashcards
51minutes of reading
Start with Feature Scaling and Transformations Drill the deck
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  1. 01 Feature Scaling and Transformations Standardisation, power transforms and quantile maps change what distance, penalties and gradients see, so they matter enormously for some model families and not at all for others, and transforming the target quietly changes what the model predicts. beginner 7m 7 cards