Hybrid Retriever
Represent combined dense and keyword retrieval with rank fusion.
Category: Query. Registry label: Hybrid Retriever. Registry subtitle: Dense + BM25 with RRF fusion.
Purpose #
Hybrid retrieval combines candidate results from semantic similarity and keyword-based search. Reciprocal rank fusion (RRF) is a conceptual technique for combining result rankings from these retrieval methods.
Position in the graph #
Vector Store → Hybrid Retriever → Reranker
Design guidance #
Use the Hybrid Search template when exploring this strategy. The hybrid retriever replaces the basic dense Retriever stage in the eight-node template. Follow it with a Reranker in the provided structure.
Current limitation #
The node represents a planned retrieval strategy; no BM25 index, rank fusion job, or dense search runs in the current frontend.