Using partition columns as raw features can be problematic when:

Question

Accepted Answer

They encode deployment/time artifacts that cause leakage or brittle prod mismatch — Partition columns can be leakage or brittle deployment artifacts — be skeptical.

Answer

They are highly informative and stable

Answer

They are the label

Answer

They are carefully designed entity keys

Using partition columns as raw features can be problematic when:

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Full Explanation