tdw-rag

Your vector search returns the 2021 answer with total confidence.

Cosine similarity has no idea what year it is. Every version of a document describes the same thing in the same words, so the archive wins on wording and the reader gets a price that changed three times since. Drag the half‑life and watch the ranking correct itself.

Decay curve and document ages

Kernel power law — heavy tail exponential — memoryless weibull — shoulder then fall cliff — flat, then an edge delayed peak — trust needs a week constant — no decay

Half-life 180 d

Decay strength 1.00

Ranking