Class EnsembleRetriever

Ensemble retriever that aggregates and orders the results of multiple retrievers by using weighted Reciprocal Rank Fusion.

Hierarchy (View Summary)

BaseMessage
- EnsembleRetriever

Index

Constructors

Properties

c lc_namespace retrievers weights

Methods

_getRelevantDocuments _rankFusion _weightedReciprocalRank lc_name

Constructors

constructor

new EnsembleRetriever(args: EnsembleRetrieverInput): EnsembleRetriever
Parameters
- args: EnsembleRetrieverInput
Returns EnsembleRetriever
Overrides BaseRetriever.constructor
- Defined in remotes/langchain-ai/langchainjs/v1/libs/langchain/src/retrievers/ensemble.ts:38

Properties

c

c: number = 60

lc_namespace

lc_namespace: string[] = ...

retrievers

retrievers: BaseRetriever[]

weights

weights: number[]

Methods

_getRelevantDocuments

_getRelevantDocuments(query: string, runManager?: any): Promise<Document[]>
Parameters
- query: string
- OptionalrunManager: any
Returns Promise<Document[]>
- Defined in remotes/langchain-ai/langchainjs/v1/libs/langchain/src/retrievers/ensemble.ts:47

_rankFusion

_rankFusion(query: string, runManager?: any): Promise<Document[]>
Parameters
- query: string
- OptionalrunManager: any
Returns Promise<Document[]>
- Defined in remotes/langchain-ai/langchainjs/v1/libs/langchain/src/retrievers/ensemble.ts:54

_weightedReciprocalRank

_weightedReciprocalRank(docList: DocumentInterface[][]): Promise<Document[]>
Parameters
- docList: DocumentInterface[][]
Returns Promise<Document[]>
- Defined in remotes/langchain-ai/langchainjs/v1/libs/langchain/src/retrievers/ensemble.ts:70

`Static`lc_name

lc_name(): string
Returns string
- Defined in remotes/langchain-ai/langchainjs/v1/libs/langchain/src/retrievers/ensemble.ts:26