retrievers
#
Retriever class returns Documents given a text query.
It is more general than a vector store. A retriever does not need to be able to store documents, only to return (or retrieve) it. Vector stores can be used as the backbone of a retriever, but there are other types of retrievers as well.
Class hierarchy:
BaseRetriever --> <name>Retriever # Examples: ArxivRetriever, MergerRetriever
Main helpers:
Document, Serializable, Callbacks,
CallbackManagerForRetrieverRun, AsyncCallbackManagerForRetrieverRun
Classes
Arcee Domain Adapted Language Models (DALMs) retriever. |
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Arxiv retriever. |
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AskNews retriever. |
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Azure AI Search service retriever. |
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Azure Cognitive Search service retriever. |
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Amazon Bedrock Knowledge Bases retriever. |
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Configuration for retrieval. |
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Configuration for vector search. |
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BM25 retriever without Elasticsearch. |
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A retriever class for Breebs. |
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Chaindesk API retriever. |
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ChatGPT plugin retriever. |
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Databerry API retriever. |
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DocArray Document Indices retriever. |
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Enumerator of the types of search to perform. |
Dria retriever using the DriaAPIWrapper. |
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Elasticsearch retriever that uses BM25. |
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Embedchain retriever. |
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Google Vertex Search API retriever alias for backwards compatibility. |
Retriever for Kay.ai datasets. |
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Additional result attribute. |
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Value of an additional result attribute. |
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Amazon Kendra Index retriever. |
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Document attribute. |
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Value of a document attribute. |
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Information that highlights the keywords in the excerpt. |
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Amazon Kendra Query API search result. |
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Query API result item. |
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Base class of a result item. |
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Amazon Kendra Retrieve API search result. |
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Retrieve API result item. |
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Text with highlights. |
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KNN retriever. |
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LlamaIndex graph data structure retriever. |
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LlamaIndex retriever. |
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Metal API retriever. |
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Milvus API retriever. |
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`NanoPQ retriever. |
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NeedleRetriever retrieves relevant documents or context from a Needle collection based on a search query. |
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Retriever for Outline API. |
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Pinecone Hybrid Search retriever. |
PubMed API retriever. |
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Rememberizer retriever. |
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LangChain API retriever. |
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SVM retriever. |
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Search depth as enumerator. |
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Tavily Search API retriever. |
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TF-IDF retriever. |
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Document retriever that uses ThirdAI's NeuralDB. |
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Vespa retriever. |
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Weaviate hybrid search retriever. |
Output parser for a list of numbered questions. |
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Search queries to research for the user's goal. |
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Google Search API retriever. |
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Wikipedia API retriever. |
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You.com Search API retriever. |
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Which documents to search. |
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Enumerator of the types of search to perform. |
Zep MemoryStore Retriever. |
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Zep Cloud MemoryStore Retriever. |
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Zilliz API retriever. |
Functions
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Clean an excerpt from Kendra. |
Combine a ResultItem title and excerpt into a single string. |
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Create an index of embeddings for a list of contexts. |
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Deprecated MilvusRetreiver. |
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Create an index of embeddings for a list of contexts. |
Create an index from a list of contexts. |
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Hash a text using SHA256. |
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Create an index of embeddings for a list of contexts. |
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Deprecated ZillizRetreiver. |
Deprecated classes