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Pathway Retriever#

Use the Pathway Retriever node to retrieve data from an Ensemble Pathway for use in a Retrieval QA Chain or another Retriever node.

On this page, you'll find the node parameters for the Pathway Retriever node, and links to more resources.

Node parameters#

  • Source
  • Pathway ID

Node reference#

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.

Refer to LangChain's general retriever documentation for more information about the service.

View Ensemble's LangChain documentation.