Class VectorDBQAChain

Class that represents a VectorDBQAChain. It extends the BaseChain class and implements the VectorDBQAChainInput interface. It performs a similarity search using a vector store and combines the search results using a specified combine documents chain.

Hierarchy

Implements

Constructors

Properties

combineDocumentsChain: BaseChain<ChainValues, ChainValues>
inputKey: string = "query"
k: number = 4
returnSourceDocuments: boolean = false
vectorstore: VectorStore
verbose: boolean

Whether to print out response text.

callbacks?: Callbacks
memory?: BaseMemory
metadata?: Record<string, unknown>
tags?: string[]

Accessors

Methods

  • Stream all output from a runnable, as reported to the callback system. This includes all inner runs of LLMs, Retrievers, Tools, etc. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. The jsonpatch ops can be applied in order to construct state.

    Parameters

    Returns AsyncGenerator<RunLogPatch, any, unknown>

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