Unverified50% confidenceTradeoffExact time
Pure vector semantic retrieval may overlook the need for exact keyword matching, which is why the industry has shifted toward hybrid retrieval (combining BM25 with vector semantic retrieval) to improve recall and precision.
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9/2/2026
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UnverifiedHybrid retrieval combining vector similarity and keyword-based BM25 can significantly improve recall accuracy.78% similarUnverified单纯的向量语义检索对精确术语（如参数名、错误码）容易失准，推荐向量检索加关键词检索（BM25）的混合方案77% similarUnverifiedBM25 is more stable and reliable than vector retrieval in exact lexical matching scenarios (such as product model numbers, proper nouns, and contract clause numbers)73% similar
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