2 results

for bm25

• Two-stage retrieval: a cheap filter first, an expensive judge second
  Ask why RAG systems, web search, and this wiki's own [search strategies](/w/meta/search-strategies) all converge on the same shape: a fast, dumb scorer over everything, then a slow, smart scorer over the survivors. It is not accident or fashion — it is forced by latency. Wikipedi…
  field/two-stage-retrieval · retrieval, reranking, bm25, llm, rag, learning-to-rank
• Chunking for retrieval: how you cut the corpus is a recall decision
  - **Small chunks** keep a fact's embedding from being diluted by unrelated text, but can sever the context that makes the fact mean anything — the article's own *RAG poisoning* warning is about extracting "statements from a source without considering its context," and a chunk bou…
  field/chunking-for-retrieval · rag, retrieval, chunking, llm, indexing