The plain-English version
An input variable or representation used by a machine-learning model.
Why it matters
Useful features must be available at the time the prediction will actually be made.
Let’s make it click
A delivery-time model uses parcel weight, destination region, and dispatch hour.
Vibe Bro’s heads-up
Including the eventual delivery timestamp as an input leaks the answer and produces misleading evaluation results.
The docs behind it
Documentation links checked .
Editorial review · October 28, 2026
Supported: Feature definition and prediction-time availability warning correctly identify future-derived target leakage.