Searchplex ID Retrieval terminology registry

Method

Reciprocal Rank Fusion

Canonical ID https://id.searchplex.net/reciprocal-rank-fusion/

A rank-fusion method that combines multiple ranked result lists using reciprocal functions of item rank.

Also called

  • RRF

Scope

RRF is one specific rank-fusion method. It should not be used as a synonym for rank fusion or hybrid retrieval generally.

Part of family

Not equivalent to

  • Reciprocal Rank Fusion is not Hybrid Retrieval. RRF can be used in hybrid retrieval systems, but hybrid retrieval is a broader retrieval pattern.
  • Reciprocal Rank Fusion is not Rank Fusion. RRF is one specific rank-fusion method, not the whole rank-fusion family.
  • Reciprocal Rank Fusion is not Score Fusion. Reciprocal Rank Fusion is a rank-fusion method, not a score-fusion method.
  • Reciprocal Rank Fusion is not Score Normalization. RRF combines rank positions and avoids relying on comparable raw scores; score normalization transforms numerical scores.

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