Unverified50% confidenceSolutionExact time
Storing key dimensions such as plan type as filterable metadata fields allows irrelevant branches to be excluded before retrieval, which is pre-filtering in hybrid retrieval
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50%
Confidence
Long-term
Relevance
10/13/2026
First Seen
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Related Claims
UnverifiedThe approach of metadata pre-filtering is to first have an LLM determine user intent and extract structured filter conditions from the query, then apply these conditions as hard filters to the vector database before executing semantic similarity search.75% similarUnverifiedMetadata filtering adopts a 'filter first, then retrieve' strategy, making a single vector library logically equivalent to multiple isolated sub-libraries while avoiding the complexity of a routing layer.75% similarUnverifiedThe column order of a composite index is crucial, as the leading column determines which query patterns the index can efficiently support; an index beginning with customer_id can support queries filtering only by customer, but may not efficiently support queries filtering only by status.71% similarUnverified经过第一次过滤后的输出仍然是数组形态，满足下一个列表操作节点的输入要求70% similarUnverified相比全文搜索或向量相似度匹配，元数据过滤让检索更可控和精确，可按主题、时间、类别等维度调取历史信息68% similar
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