ConceptSparse Retrieval / BM25
Sparse Retrieval
A keyword-matching retrieval method based on term frequency and inverse document frequency. It is most sensitive to exact matches, proper nouns and numbers. Its representative algorithm is BM25.
Core Facts
Timeline (last 90 days)
Oct 16
The Retriever is responsible for quickly recalling candidate passages from a large-scale document library, and common implementations include dense retrieval, sparse retrieval, and hybrid retrieval.
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