Recency as a 0-1 decay across the window: 1.0 for something published at now, floored at 0.1 at the far edge so an in-window article never scores as though it were out of window. Undated and out-of-window both score 0.
now
Recency as a 0-1 decay across the window: 1.0 for something published at
now, floored at 0.1 at the far edge so an in-window article never scores as though it were out of window. Undated and out-of-window both score 0.