langchain_community.vectorstores.azuresearch.AzureSearch

class langchain_community.vectorstores.azuresearch.AzureSearch(azure_search_endpoint: str, azure_search_key: str, index_name: str, embedding_function: Union[Callable, Embeddings], search_type: str = 'hybrid', semantic_configuration_name: Optional[str] = None, fields: Optional[List[SearchField]] = None, vector_search: Optional[VectorSearch] = None, semantic_configurations: Optional[Union[SemanticConfiguration, List[SemanticConfiguration]]] = None, scoring_profiles: Optional[List[ScoringProfile]] = None, default_scoring_profile: Optional[str] = None, cors_options: Optional[CorsOptions] = None, *, vector_search_dimensions: Optional[int] = None, additional_search_client_options: Optional[Dict[str, Any]] = None, azure_ad_access_token: Optional[str] = None, **kwargs: Any)

Azure Cognitive Search vector store.

Attributes

embeddings

Access the query embedding object if available.

Methods

__init__(azure_search_endpoint, ...[, ...])
aadd_documents(documents, **kwargs)	Async run more documents through the embeddings and add to the vectorstore.
aadd_embeddings(text_embeddings[, ...])	Add embeddings to an existing index.
aadd_texts(texts[, metadatas, keys])	Async run more texts through the embeddings and add to the vectorstore.
add_documents(documents, **kwargs)	Add or update documents in the vectorstore.
add_embeddings(text_embeddings[, metadatas, ...])	Add embeddings to an existing index.
add_texts(texts[, metadatas, keys])	Add texts data to an existing index.
adelete([ids])	Delete by vector ID.
afrom_documents(documents, embedding, **kwargs)	Async return VectorStore initialized from documents and embeddings.
afrom_embeddings(text_embeddings, embedding)
afrom_texts(texts, embedding[, metadatas, ...])	Async return VectorStore initialized from texts and embeddings.
aget_by_ids(ids, /)	Async get documents by their IDs.
ahybrid_max_marginal_relevance_search_with_score(query)	Return docs most similar to query with a hybrid query
ahybrid_search(query[, k])	Returns the most similar indexed documents to the query text.
ahybrid_search_with_relevance_scores(query)
ahybrid_search_with_score(query[, k, filters])	Return docs most similar to query with a hybrid query.
amax_marginal_relevance_search(query[, k, ...])	Async return docs selected using the maximal marginal relevance.
amax_marginal_relevance_search_by_vector(...)	Async return docs selected using the maximal marginal relevance.
amax_marginal_relevance_search_with_score(query)	Perform a search and return results that are reordered by MMR.
as_retriever(**kwargs)	Return AzureSearchVectorStoreRetriever initialized from this VectorStore.
asearch(query, search_type, **kwargs)	Async return docs most similar to query using a specified search type.
asemantic_hybrid_search(query[, k])	Returns the most similar indexed documents to the query text.
asemantic_hybrid_search_with_score(query[, ...])	Returns the most similar indexed documents to the query text.
asemantic_hybrid_search_with_score_and_rerank(query)	Return docs most similar to query with a hybrid query.
asimilarity_search(query[, k, search_type])	Async return docs most similar to query.
asimilarity_search_by_vector(embedding[, k])	Async return docs most similar to embedding vector.
asimilarity_search_with_relevance_scores(query)	Async return docs and relevance scores in the range [0, 1].
asimilarity_search_with_score(query, *[, k])	Run similarity search with distance.
avector_search(query[, k, filters])	Returns the most similar indexed documents to the query text.
avector_search_with_score(query[, k, filters])	Return docs most similar to query.
delete([ids])	Delete by vector ID.
from_documents(documents, embedding, **kwargs)	Return VectorStore initialized from documents and embeddings.
from_embeddings(text_embeddings, embedding)
from_texts(texts, embedding[, metadatas, ...])	Return VectorStore initialized from texts and embeddings.
get_by_ids(ids, /)	Get documents by their IDs.
hybrid_max_marginal_relevance_search_with_score(query)	Return docs most similar to query with a hybrid query
hybrid_search(query[, k])	Returns the most similar indexed documents to the query text.
hybrid_search_with_relevance_scores(query[, ...])
hybrid_search_with_score(query[, k, filters])	Return docs most similar to query with a hybrid query.
max_marginal_relevance_search(query[, k, ...])	Return docs selected using the maximal marginal relevance.
max_marginal_relevance_search_by_vector(...)	Return docs selected using the maximal marginal relevance.
max_marginal_relevance_search_with_score(query)	Perform a search and return results that are reordered by MMR.
search(query, search_type, **kwargs)	Return docs most similar to query using a specified search type.
semantic_hybrid_search(query[, k])	Returns the most similar indexed documents to the query text.
semantic_hybrid_search_with_score(query[, ...])	Returns the most similar indexed documents to the query text.
semantic_hybrid_search_with_score_and_rerank(query)	Return docs most similar to query with a hybrid query.
similarity_search(query[, k, search_type])	Return docs most similar to query.
similarity_search_by_vector(embedding[, k])	Return docs most similar to embedding vector.
similarity_search_with_relevance_scores(query)	Return docs and relevance scores in the range [0, 1].
similarity_search_with_score(query, *[, k])	Run similarity search with distance.
vector_search(query[, k, filters])	Returns the most similar indexed documents to the query text.
vector_search_with_score(query[, k, filters])	Return docs most similar to query.

Parameters

• azure_search_endpoint (str) –

• azure_search_key (str) –

• index_name (str) –

• embedding_function (Union[Callable, Embeddings]) –

• search_type (str) –

• semantic_configuration_name (Optional[str]) –

• fields (Optional[List[SearchField]]) –

• vector_search (Optional[VectorSearch]) –

• semantic_configurations (Optional[Union[SemanticConfiguration, List[SemanticConfiguration]]]) –

• scoring_profiles (Optional[List[ScoringProfile]]) –

• default_scoring_profile (Optional[str]) –

• cors_options (Optional[CorsOptions]) –

• vector_search_dimensions (Optional[int]) –

• additional_search_client_options (Optional[Dict[str, Any]]) –

• azure_ad_access_token (Optional[str]) –

• kwargs (Any) –

__init__(azure_search_endpoint: str, azure_search_key: str, index_name: str, embedding_function: Union[Callable, Embeddings], search_type: str = 'hybrid', semantic_configuration_name: Optional[str] = None, fields: Optional[List[SearchField]] = None, vector_search: Optional[VectorSearch] = None, semantic_configurations: Optional[Union[SemanticConfiguration, List[SemanticConfiguration]]] = None, scoring_profiles: Optional[List[ScoringProfile]] = None, default_scoring_profile: Optional[str] = None, cors_options: Optional[CorsOptions] = None, *, vector_search_dimensions: Optional[int] = None, additional_search_client_options: Optional[Dict[str, Any]] = None, azure_ad_access_token: Optional[str] = None, **kwargs: Any)

Parameters

• azure_search_endpoint (str) –

• azure_search_key (str) –

• index_name (str) –

• embedding_function (Union[Callable, Embeddings]) –

• search_type (str) –

• semantic_configuration_name (Optional[str]) –

• fields (Optional[List[SearchField]]) –

• vector_search (Optional[VectorSearch]) –

• semantic_configurations (Optional[Union[SemanticConfiguration, List[SemanticConfiguration]]]) –

• scoring_profiles (Optional[List[ScoringProfile]]) –

• default_scoring_profile (Optional[str]) –

• cors_options (Optional[CorsOptions]) –

• vector_search_dimensions (Optional[int]) –

• additional_search_client_options (Optional[Dict[str, Any]]) –

• azure_ad_access_token (Optional[str]) –

• kwargs (Any) –

async aadd_documents(documents: List[Document], **kwargs: Any) → List[str]

Async run more documents through the embeddings and add to the vectorstore.

Parameters

• documents (List[Document]) – Documents to add to the vectorstore.

• kwargs (Any) – Additional keyword arguments.

Returns

List of IDs of the added texts.

Raises

ValueError – If the number of IDs does not match the number of documents.

Return type

List[str]

async aadd_embeddings(text_embeddings: Iterable[Tuple[str, List[float]]], metadatas: Optional[List[dict]] = None, *, keys: Optional[List[str]] = None) → List[str]

Add embeddings to an existing index.

Parameters

• text_embeddings (Iterable[Tuple[str, List[float]]]) –

• metadatas (Optional[List[dict]]) –

• keys (Optional[List[str]]) –

Return type

List[str]

async aadd_texts(texts: Iterable[str], metadatas: Optional[List[dict]] = None, *, keys: Optional[List[str]] = None, **kwargs: Any) → List[str]

Async run more texts through the embeddings and add to the vectorstore.

Parameters

• texts (Iterable[str]) – Iterable of strings to add to the vectorstore.

• metadatas (Optional[List[dict]]) – Optional list of metadatas associated with the texts. Default is None.

• **kwargs (Any) – vectorstore specific parameters.

• keys (Optional[List[str]]) –

• **kwargs –

Returns

List of ids from adding the texts into the vectorstore.

Raises

• ValueError – If the number of metadatas does not match the number of texts.

• ValueError – If the number of ids does not match the number of texts.

Return type

List[str]

add_documents(documents: List[Document], **kwargs: Any) → List[str]

Add or update documents in the vectorstore.

Parameters

• documents (List[Document]) – Documents to add to the vectorstore.

• kwargs (Any) – Additional keyword arguments. if kwargs contains ids and documents contain ids, the ids in the kwargs will receive precedence.

Returns

List of IDs of the added texts.

Raises

ValueError – If the number of ids does not match the number of documents.

Return type

List[str]

add_embeddings(text_embeddings: Iterable[Tuple[str, List[float]]], metadatas: Optional[List[dict]] = None, *, keys: Optional[List[str]] = None) → List[str]

Add embeddings to an existing index.

Parameters

• text_embeddings (Iterable[Tuple[str, List[float]]]) –

• metadatas (Optional[List[dict]]) –

• keys (Optional[List[str]]) –

Return type

List[str]

add_texts(texts: Iterable[str], metadatas: Optional[List[dict]] = None, *, keys: Optional[List[str]] = None, **kwargs: Any) → List[str]

Add texts data to an existing index.

Parameters

• texts (Iterable[str]) –

• metadatas (Optional[List[dict]]) –

• keys (Optional[List[str]]) –

• kwargs (Any) –

Return type

List[str]

async adelete(ids: Optional[List[str]] = None, **kwargs: Any) → bool

Delete by vector ID.

Parameters

• ids (Optional[List[str]]) – List of ids to delete.

• kwargs (Any) –

Returns

True if deletion is successful, False otherwise.

Return type

bool

async classmethod afrom_documents(documents: List[Document], embedding: Embeddings, **kwargs: Any) → VST

Async return VectorStore initialized from documents and embeddings.

Parameters

• documents (List[Document]) – List of Documents to add to the vectorstore.

• embedding (Embeddings) – Embedding function to use.

• kwargs (Any) – Additional keyword arguments.

Returns

VectorStore initialized from documents and embeddings.

Return type

VectorStore

async classmethod afrom_embeddings(text_embeddings: Iterable[Tuple[str, List[float]]], embedding: Embeddings, metadatas: Optional[List[dict]] = None, *, azure_search_endpoint: str = '', azure_search_key: str = '', index_name: str = 'langchain-index', fields: Optional[List[SearchField]] = None, **kwargs: Any) → AzureSearch

Parameters

• text_embeddings (Iterable[Tuple[str, List[float]]]) –

• embedding (Embeddings) –

• metadatas (Optional[List[dict]]) –

• azure_search_endpoint (str) –

• azure_search_key (str) –

• index_name (str) –

• fields (Optional[List[SearchField]]) –

• kwargs (Any) –

Return type

AzureSearch

async classmethod afrom_texts(texts: List[str], embedding: Embeddings, metadatas: Optional[List[dict]] = None, azure_search_endpoint: str = '', azure_search_key: str = '', azure_ad_access_token: Optional[str] = None, index_name: str = 'langchain-index', fields: Optional[List[SearchField]] = None, **kwargs: Any) → AzureSearch

Async return VectorStore initialized from texts and embeddings.

Parameters

• texts (List[str]) – Texts to add to the vectorstore.

• embedding (Embeddings) – Embedding function to use.

• metadatas (Optional[List[dict]]) – Optional list of metadatas associated with the texts. Default is None.

• kwargs (Any) – Additional keyword arguments.

• azure_search_endpoint (str) –

• azure_search_key (str) –

• azure_ad_access_token (Optional[str]) –

• index_name (str) –

• fields (Optional[List[SearchField]]) –

Returns

VectorStore initialized from texts and embeddings.

Return type

VectorStore

async aget_by_ids(ids: Sequence[str], /) → List[Document]

Async get documents by their IDs.

The returned documents are expected to have the ID field set to the ID of the document in the vector store.

Fewer documents may be returned than requested if some IDs are not found or if there are duplicated IDs.

Users should not assume that the order of the returned documents matches the order of the input IDs. Instead, users should rely on the ID field of the returned documents.

This method should NOT raise exceptions if no documents are found for some IDs.

Parameters

ids (Sequence[str]) – List of ids to retrieve.

Returns

List of Documents.

Return type

List[Document]

New in version 0.2.11.

async ahybrid_max_marginal_relevance_search_with_score(query: str, k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, *, filters: Optional[str] = None, **kwargs: Any) → List[Tuple[Document, float]]

Return docs most similar to query with a hybrid query

and reorder results by MMR.

Parameters

• query (str) – Text to look up documents similar to.

• k (int, optional) – Number of Documents to return. Defaults to 4.

• fetch_k (int, optional) – Total results to select k from. Defaults to 20.

• lambda_mult (float) – Number between 0 and 1 that determines the degree of diversity among the results with 0 corresponding to maximum diversity and 1 to minimum diversity. Defaults to 0.5

• filters (str, optional) – Filtering expression. Defaults to None.

• kwargs (Any) –

Returns

List of Documents most similar to the query and score for each

Return type

List[Tuple[Document, float]]

async ahybrid_search(query: str, k: int = 4, **kwargs: Any) → List[Document]

Returns the most similar indexed documents to the query text.

Parameters

• query (str) – The query text for which to find similar documents.

• k (int) – The number of documents to return. Default is 4.

• kwargs (Any) –

Returns

A list of documents that are most similar to the query text.

Return type

List[Document]

async ahybrid_search_with_relevance_scores(query: str, k: int = 4, *, score_threshold: Optional[float] = None, **kwargs: Any) → List[Tuple[Document, float]]

Parameters

• query (str) –

• k (int) –

• score_threshold (Optional[float]) –

• kwargs (Any) –

Return type

List[Tuple[Document, float]]

async ahybrid_search_with_score(query: str, k: int = 4, filters: Optional[str] = None, **kwargs: Any) → List[Tuple[Document, float]]

Return docs most similar to query with a hybrid query.

Parameters

• query (str) – Text to look up documents similar to.

• k (int) – Number of Documents to return. Defaults to 4.

• filters (Optional[str]) –

• kwargs (Any) –

Returns

List of Documents most similar to the query and score for each

Return type

List[Tuple[Document, float]]

async amax_marginal_relevance_search(query: str, k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, **kwargs: Any) → List[Document]

Async return docs selected using the maximal marginal relevance.

Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents.

Parameters

• query (str) – Text to look up documents similar to.

• k (int) – Number of Documents to return. Defaults to 4.

• fetch_k (int) – Number of Documents to fetch to pass to MMR algorithm. Default is 20.

• lambda_mult (float) – Number between 0 and 1 that determines the degree of diversity among the results with 0 corresponding to maximum diversity and 1 to minimum diversity. Defaults to 0.5.

• kwargs (Any) –

Returns

List of Documents selected by maximal marginal relevance.

Return type

List[Document]

async amax_marginal_relevance_search_by_vector(embedding: List[float], k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, **kwargs: Any) → List[Document]

Async return docs selected using the maximal marginal relevance.

Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents.

Parameters

• embedding (List[float]) – Embedding to look up documents similar to.

• k (int) – Number of Documents to return. Defaults to 4.

• fetch_k (int) – Number of Documents to fetch to pass to MMR algorithm. Default is 20.

• lambda_mult (float) – Number between 0 and 1 that determines the degree of diversity among the results with 0 corresponding to maximum diversity and 1 to minimum diversity. Defaults to 0.5.

• **kwargs (Any) – Arguments to pass to the search method.

Returns

List of Documents selected by maximal marginal relevance.

Return type

List[Document]

async amax_marginal_relevance_search_with_score(query: str, k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, *, filters: Optional[str] = None, **kwargs: Any) → List[Tuple[Document, float]]

Perform a search and return results that are reordered by MMR.

Parameters

• query (str) – Text to look up documents similar to.

• k (int, optional) – How many results to give. Defaults to 4.

• fetch_k (int, optional) – Total results to select k from. Defaults to 20.

• lambda_mult (float) – Number between 0 and 1 that determines the degree of diversity among the results with 0 corresponding to maximum diversity and 1 to minimum diversity. Defaults to 0.5

• filters (str, optional) – Filtering expression. Defaults to None.

• kwargs (Any) –

Returns

List of Documents most similar

to the query and score for each

Return type

List[Tuple[Document, float]]

as_retriever(**kwargs: Any) → AzureSearchVectorStoreRetriever

Return AzureSearchVectorStoreRetriever initialized from this VectorStore.

Parameters

• search_type (Optional[str]) –

  Defines the type of search that the Retriever should perform. Can be “similarity” (default), “hybrid”, or

  ”semantic_hybrid”.

• search_kwargs (Optional[Dict]) –

  Keyword arguments to pass to the search function. Can include things like:

  score_threshold: Minimum relevance threshold

  for similarity_score_threshold

  fetch_k: Amount of documents to pass to MMR algorithm (Default: 20) lambda_mult: Diversity of results returned by MMR;

  1 for minimum diversity and 0 for maximum. (Default: 0.5)

  filter: Filter by document metadata

• kwargs (Any) –

Returns

Retriever class for VectorStore.

Return type

AzureSearchVectorStoreRetriever

async asearch(query: str, search_type: str, **kwargs: Any) → List[Document]

Async return docs most similar to query using a specified search type.

Parameters

• query (str) – Input text.

• search_type (str) – Type of search to perform. Can be “similarity”, “mmr”, or “similarity_score_threshold”.

• **kwargs (Any) – Arguments to pass to the search method.

Returns

List of Documents most similar to the query.

Raises

ValueError – If search_type is not one of “similarity”, “mmr”, or “similarity_score_threshold”.

Return type

List[Document]

async asemantic_hybrid_search(query: str, k: int = 4, **kwargs: Any) → List[Document]

Returns the most similar indexed documents to the query text.

Parameters

• query (str) – The query text for which to find similar documents.

• k (int) – The number of documents to return. Default is 4.

• filters – Filtering expression.

• kwargs (Any) –

Returns

A list of documents that are most similar to the query text.

Return type

List[Document]

async asemantic_hybrid_search_with_score(query: str, k: int = 4, score_type: Literal['score', 'reranker_score'] = 'score', *, score_threshold: Optional[float] = None, **kwargs: Any) → List[Tuple[Document, float]]

Returns the most similar indexed documents to the query text.

Parameters

• query (str) – The query text for which to find similar documents.

• k (int) – The number of documents to return. Default is 4.

• score_type (Literal['score', 'reranker_score']) – Must either be “score” or “reranker_score”. Defaulted to “score”.

• filters – Filtering expression.

• score_threshold (Optional[float]) –

• kwargs (Any) –

Returns

A list of documents and their

corresponding scores.

Return type

List[Tuple[Document, float]]

async asemantic_hybrid_search_with_score_and_rerank(query: str, k: int = 4, *, filters: Optional[str] = None, **kwargs: Any) → List[Tuple[Document, float, float]]

Return docs most similar to query with a hybrid query.

Parameters

• query (str) – Text to look up documents similar to.

• k (int) – Number of Documents to return. Defaults to 4.

• filters (Optional[str]) – Filtering expression.

• kwargs (Any) –

Returns

List of Documents most similar to the query and score for each

Return type

List[Tuple[Document, float, float]]

async asimilarity_search(query: str, k: int = 4, *, search_type: Optional[str] = None, **kwargs: Any) → List[Document]

Async return docs most similar to query.

Parameters

• query (str) – Input text.

• k (int) – Number of Documents to return. Defaults to 4.

• **kwargs (Any) – Arguments to pass to the search method.

• search_type (Optional[str]) –

• **kwargs –

Returns

List of Documents most similar to the query.

Return type

List[Document]

async asimilarity_search_by_vector(embedding: List[float], k: int = 4, **kwargs: Any) → List[Document]

Async return docs most similar to embedding vector.

Parameters

• embedding (List[float]) – Embedding to look up documents similar to.

• k (int) – Number of Documents to return. Defaults to 4.

• **kwargs (Any) – Arguments to pass to the search method.

Returns

List of Documents most similar to the query vector.

Return type

List[Document]

async asimilarity_search_with_relevance_scores(query: str, k: int = 4, *, score_threshold: Optional[float] = None, **kwargs: Any) → List[Tuple[Document, float]]

Async return docs and relevance scores in the range [0, 1].

0 is dissimilar, 1 is most similar.

Parameters

• query (str) – Input text.

• k (int) – Number of Documents to return. Defaults to 4.

• **kwargs (Any) –

  kwargs to be passed to similarity search. Should include: score_threshold: Optional, a floating point value between 0 to 1 to

  filter the resulting set of retrieved docs

• score_threshold (Optional[float]) –

• **kwargs –

Returns

List of Tuples of (doc, similarity_score)

Return type

List[Tuple[Document, float]]

async asimilarity_search_with_score(query: str, *, k: int = 4, **kwargs: Any) → List[Tuple[Document, float]]

Run similarity search with distance.

Parameters

• query (str) –

• k (int) –

• kwargs (Any) –

Return type

List[Tuple[Document, float]]

async avector_search(query: str, k: int = 4, *, filters: Optional[str] = None, **kwargs: Any) → List[Document]

Returns the most similar indexed documents to the query text.

Parameters

• query (str) – The query text for which to find similar documents.

• k (int) – The number of documents to return. Default is 4.

• filters (Optional[str]) –

• kwargs (Any) –

Returns

A list of documents that are most similar to the query text.

Return type

List[Document]

async avector_search_with_score(query: str, k: int = 4, filters: Optional[str] = None, **kwargs: Any) → List[Tuple[Document, float]]

Return docs most similar to query.

Parameters

• query (str) – Text to look up documents similar to.

• k (int, optional) – Number of Documents to return. Defaults to 4.

• filters (str, optional) – Filtering expression. Defaults to None.

• kwargs (Any) –

Returns

List of Documents most similar

to the query and score for each

Return type

List[Tuple[Document, float]]

delete(ids: Optional[List[str]] = None, **kwargs: Any) → bool

Delete by vector ID.

Parameters

• ids (Optional[List[str]]) – List of ids to delete.

• kwargs (Any) –

Returns

True if deletion is successful, False otherwise.

Return type

bool

classmethod from_documents(documents: List[Document], embedding: Embeddings, **kwargs: Any) → VST

Return VectorStore initialized from documents and embeddings.

Parameters

• documents (List[Document]) – List of Documents to add to the vectorstore.

• embedding (Embeddings) – Embedding function to use.

• kwargs (Any) – Additional keyword arguments.

Returns

VectorStore initialized from documents and embeddings.

Return type

VectorStore

classmethod from_embeddings(text_embeddings: Iterable[Tuple[str, List[float]]], embedding: Embeddings, metadatas: Optional[List[dict]] = None, *, azure_search_endpoint: str = '', azure_search_key: str = '', index_name: str = 'langchain-index', fields: Optional[List[SearchField]] = None, **kwargs: Any) → AzureSearch

Parameters

• text_embeddings (Iterable[Tuple[str, List[float]]]) –

• embedding (Embeddings) –

• metadatas (Optional[List[dict]]) –

• azure_search_endpoint (str) –

• azure_search_key (str) –

• index_name (str) –

• fields (Optional[List[SearchField]]) –

• kwargs (Any) –

Return type

AzureSearch

classmethod from_texts(texts: List[str], embedding: Embeddings, metadatas: Optional[List[dict]] = None, azure_search_endpoint: str = '', azure_search_key: str = '', azure_ad_access_token: Optional[str] = None, index_name: str = 'langchain-index', fields: Optional[List[SearchField]] = None, **kwargs: Any) → AzureSearch

Return VectorStore initialized from texts and embeddings.

Parameters

• texts (List[str]) – Texts to add to the vectorstore.

• embedding (Embeddings) – Embedding function to use.

• metadatas (Optional[List[dict]]) – Optional list of metadatas associated with the texts. Default is None.

• kwargs (Any) – Additional keyword arguments.

• azure_search_endpoint (str) –

• azure_search_key (str) –

• azure_ad_access_token (Optional[str]) –

• index_name (str) –

• fields (Optional[List[SearchField]]) –

Returns

VectorStore initialized from texts and embeddings.

Return type

VectorStore

get_by_ids(ids: Sequence[str], /) → List[Document]

Get documents by their IDs.

The returned documents are expected to have the ID field set to the ID of the document in the vector store.

Fewer documents may be returned than requested if some IDs are not found or if there are duplicated IDs.

Users should not assume that the order of the returned documents matches the order of the input IDs. Instead, users should rely on the ID field of the returned documents.

This method should NOT raise exceptions if no documents are found for some IDs.

Parameters

ids (Sequence[str]) – List of ids to retrieve.

Returns

List of Documents.

Return type

List[Document]

New in version 0.2.11.

hybrid_max_marginal_relevance_search_with_score(query: str, k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, *, filters: Optional[str] = None, **kwargs: Any) → List[Tuple[Document, float]]

Return docs most similar to query with a hybrid query

and reorder results by MMR.

Parameters

• query (str) – Text to look up documents similar to.

• k (int, optional) – Number of Documents to return. Defaults to 4.

• fetch_k (int, optional) – Total results to select k from. Defaults to 20.

• lambda_mult (float) – Number between 0 and 1 that determines the degree of diversity among the results with 0 corresponding to maximum diversity and 1 to minimum diversity. Defaults to 0.5

• filters (str, optional) – Filtering expression. Defaults to None.

• kwargs (Any) –

Returns

List of Documents most similar to the query and score for each

Return type

List[Tuple[Document, float]]

hybrid_search(query: str, k: int = 4, **kwargs: Any) → List[Document]

Returns the most similar indexed documents to the query text.

Parameters

• query (str) – The query text for which to find similar documents.

• k (int) – The number of documents to return. Default is 4.

• kwargs (Any) –

Returns

A list of documents that are most similar to the query text.

Return type

List[Document]

hybrid_search_with_relevance_scores(query: str, k: int = 4, *, score_threshold: Optional[float] = None, **kwargs: Any) → List[Tuple[Document, float]]

Parameters

• query (str) –

• k (int) –

• score_threshold (Optional[float]) –

• kwargs (Any) –

Return type

List[Tuple[Document, float]]

hybrid_search_with_score(query: str, k: int = 4, filters: Optional[str] = None, **kwargs: Any) → List[Tuple[Document, float]]

Return docs most similar to query with a hybrid query.

Parameters

• query (str) – Text to look up documents similar to.

• k (int) – Number of Documents to return. Defaults to 4.

• filters (Optional[str]) –

• kwargs (Any) –

Returns

List of Documents most similar to the query and score for each

Return type

List[Tuple[Document, float]]

max_marginal_relevance_search(query: str, k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, **kwargs: Any) → List[Document]

Return docs selected using the maximal marginal relevance.

Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents.

Parameters

• query (str) – Text to look up documents similar to.

• k (int) – Number of Documents to return. Defaults to 4.

• fetch_k (int) – Number of Documents to fetch to pass to MMR algorithm. Default is 20.

• lambda_mult (float) – Number between 0 and 1 that determines the degree of diversity among the results with 0 corresponding to maximum diversity and 1 to minimum diversity. Defaults to 0.5.

• **kwargs (Any) – Arguments to pass to the search method.

Returns

List of Documents selected by maximal marginal relevance.

Return type

List[Document]

max_marginal_relevance_search_by_vector(embedding: List[float], k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, **kwargs: Any) → List[Document]

Return docs selected using the maximal marginal relevance.

Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents.

Parameters

• embedding (List[float]) – Embedding to look up documents similar to.

• k (int) – Number of Documents to return. Defaults to 4.

• fetch_k (int) – Number of Documents to fetch to pass to MMR algorithm. Default is 20.

• lambda_mult (float) – Number between 0 and 1 that determines the degree of diversity among the results with 0 corresponding to maximum diversity and 1 to minimum diversity. Defaults to 0.5.

• **kwargs (Any) – Arguments to pass to the search method.

Returns

List of Documents selected by maximal marginal relevance.

Return type

List[Document]

max_marginal_relevance_search_with_score(query: str, k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, *, filters: Optional[str] = None, **kwargs: Any) → List[Tuple[Document, float]]

Perform a search and return results that are reordered by MMR.

Parameters

• query (str) – Text to look up documents similar to.

• k (int, optional) – How many results to give. Defaults to 4.

• fetch_k (int, optional) – Total results to select k from. Defaults to 20.

• lambda_mult (float) – Number between 0 and 1 that determines the degree of diversity among the results with 0 corresponding to maximum diversity and 1 to minimum diversity. Defaults to 0.5

• filters (str, optional) – Filtering expression. Defaults to None.

• kwargs (Any) –

Returns

List of Documents most similar

to the query and score for each

Return type

List[Tuple[Document, float]]

search(query: str, search_type: str, **kwargs: Any) → List[Document]

Return docs most similar to query using a specified search type.

Parameters

• query (str) – Input text

• search_type (str) – Type of search to perform. Can be “similarity”, “mmr”, or “similarity_score_threshold”.

• **kwargs (Any) – Arguments to pass to the search method.

Returns

List of Documents most similar to the query.

Raises

ValueError – If search_type is not one of “similarity”, “mmr”, or “similarity_score_threshold”.

Return type

List[Document]

semantic_hybrid_search(query: str, k: int = 4, **kwargs: Any) → List[Document]

Returns the most similar indexed documents to the query text.

Parameters

• query (str) – The query text for which to find similar documents.

• k (int) – The number of documents to return. Default is 4.

• filters – Filtering expression.

• kwargs (Any) –

Returns

A list of documents that are most similar to the query text.

Return type

List[Document]

semantic_hybrid_search_with_score(query: str, k: int = 4, score_type: Literal['score', 'reranker_score'] = 'score', *, score_threshold: Optional[float] = None, **kwargs: Any) → List[Tuple[Document, float]]

Returns the most similar indexed documents to the query text.

Parameters

• query (str) – The query text for which to find similar documents.

• k (int) – The number of documents to return. Default is 4.

• score_type (Literal['score', 'reranker_score']) – Must either be “score” or “reranker_score”. Defaulted to “score”.

• filters – Filtering expression.

• score_threshold (Optional[float]) –

• kwargs (Any) –

Returns

A list of documents and their

corresponding scores.

Return type

List[Tuple[Document, float]]

semantic_hybrid_search_with_score_and_rerank(query: str, k: int = 4, *, filters: Optional[str] = None, **kwargs: Any) → List[Tuple[Document, float, float]]

Return docs most similar to query with a hybrid query.

Parameters

• query (str) – Text to look up documents similar to.

• k (int) – Number of Documents to return. Defaults to 4.

• filters (Optional[str]) – Filtering expression.

• kwargs (Any) –

Returns

List of Documents most similar to the query and score for each

Return type

List[Tuple[Document, float, float]]

similarity_search(query: str, k: int = 4, *, search_type: Optional[str] = None, **kwargs: Any) → List[Document]

Return docs most similar to query.

Parameters

• query (str) – Input text.

• k (int) – Number of Documents to return. Defaults to 4.

• **kwargs (Any) – Arguments to pass to the search method.

• search_type (Optional[str]) –

• **kwargs –

Returns

List of Documents most similar to the query.

Return type

List[Document]

similarity_search_by_vector(embedding: List[float], k: int = 4, **kwargs: Any) → List[Document]

Return docs most similar to embedding vector.

Parameters

• embedding (List[float]) – Embedding to look up documents similar to.

• k (int) – Number of Documents to return. Defaults to 4.

• **kwargs (Any) – Arguments to pass to the search method.

Returns

List of Documents most similar to the query vector.

Return type

List[Document]

similarity_search_with_relevance_scores(query: str, k: int = 4, *, score_threshold: Optional[float] = None, **kwargs: Any) → List[Tuple[Document, float]]

Return docs and relevance scores in the range [0, 1].

0 is dissimilar, 1 is most similar.

Parameters

• query (str) – Input text.

• k (int) – Number of Documents to return. Defaults to 4.

• **kwargs (Any) –

  kwargs to be passed to similarity search. Should include: score_threshold: Optional, a floating point value between 0 to 1 to

  filter the resulting set of retrieved docs.

• score_threshold (Optional[float]) –

• **kwargs –

Returns

List of Tuples of (doc, similarity_score).

Return type

List[Tuple[Document, float]]

similarity_search_with_score(query: str, *, k: int = 4, **kwargs: Any) → List[Tuple[Document, float]]

Run similarity search with distance.

Parameters

• query (str) –

• k (int) –

• kwargs (Any) –

Return type

List[Tuple[Document, float]]

vector_search(query: str, k: int = 4, *, filters: Optional[str] = None, **kwargs: Any) → List[Document]

Returns the most similar indexed documents to the query text.

Parameters

• query (str) – The query text for which to find similar documents.

• k (int) – The number of documents to return. Default is 4.

• filters (Optional[str]) –

• kwargs (Any) –

Returns

A list of documents that are most similar to the query text.

Return type

List[Document]

vector_search_with_score(query: str, k: int = 4, filters: Optional[str] = None, **kwargs: Any) → List[Tuple[Document, float]]

Return docs most similar to query.

Parameters

• query (str) – Text to look up documents similar to.

• k (int, optional) – Number of Documents to return. Defaults to 4.

• filters (str, optional) – Filtering expression. Defaults to None.

• kwargs (Any) –

Returns

List of Documents most similar

to the query and score for each

Return type

List[Tuple[Document, float]]

Examples using AzureSearch

• Azure AI Search