Dev Tools · 1h ago
Reciprocal Rank Fusion: How It Works and When to Skip It
Reciprocal Rank Fusion (RRF) merges ranked lists from different retrievers by converting ranks to scores using 1/(60+rank). It avoids the scale mismatch problem of averaging raw scores. However, RRF assumes all retrievers are equally reliable, which may not hold in practice.
Meridian48 take
RRF is a simple, effective fusion method, but its equal-weight assumption can be a weakness when retrievers have varying accuracy.
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Reciprocal Rank Fusion (RRF): how it works and when to skip it →
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