Prediction time vs observation time

A forecast generated on Monday for Friday has two times — when it was made and what it is about. Storing only one makes the forecast unauditable and mixes horizons.

Class

Case to account for

Affects

1 conversion

Detection

A forecast row carries a single timestamp.

Mitigation

Store both the issued-at time and the target time; slot and compare on the target, audit on the issued-at.

Affected conversions

semantics

OPEN