上下文压缩检索器节点(Contextual Compression Retriever node)#
上下文压缩检索节点通过考虑查询的上下文，改进了从向量存储文档相似性搜索返回的答案。
🌐 The Contextual Compression Retriever node improves the answers returned from vector store document similarity searches by taking into account the context from the query.
Parameter resolution in sub-nodes
Sub-nodes behave differently to other nodes when processing multiple items using an expression.
Most nodes, including root nodes, take any number of items as input, process these items, and output the results. You can use expressions to refer to input items, and the node resolves the expression for each item in turn. For example, given an input of five name values, the expression {{ $json.name }} resolves to each name in turn.
In sub-nodes, the expression always resolves to the first item. For example, given an input of five name values, the expression {{ $json.name }} always resolves to the first name.
模板和示例(Templates and examples)#
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相关资源(Related resources)#
有关该服务的更多信息，请参阅 LangChain 的上下文压缩检索器文档。
🌐 Refer to LangChain's contextual compression retriever documentation for more information about the service.
View n8n's Advanced AI documentation.