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JavaScript@langchain/corevectorstoresSaveableVectorStoreasRetriever
Methodā—Since v1.0

asRetriever

Creates a VectorStoreRetriever instance with flexible configuration options.

Copy
asRetriever(
  kOrFields: number | Partial<VectorStoreRetrieverInput<SaveableVectorStore>>,
  filter: string | object,
  callbacks: Callbacks,
  tags: string[],
  metadata: Record<string, unknown>,
  verbose: boolean
): VectorStoreRetriever<SaveableVectorStore>

Parameters

NameTypeDescription
kOrFieldsnumber | Partial<VectorStoreRetrieverInput<SaveableVectorStore>>

If a number is provided, it sets the k parameter (number of items to retrieve).

  • If an object is provided, it should contain various configuration options.
filterstring | object

Optional filter criteria to limit the items retrieved based on the specified filter type.

callbacksCallbacks

Optional callbacks that may be triggered at specific stages of the retrieval process.

tagsstring[]

Tags to categorize or label the VectorStoreRetriever. Defaults to an empty array if not provided.

metadataRecord<string, unknown>

Additional metadata as key-value pairs to add contextual information for the retrieval process.

verboseboolean

If true, enables detailed logging for the retrieval process. Defaults to false.

Example

Basic usage with a `k` value:

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const retriever = myVectorStore.asRetriever(5);
View source on GitHub