langchain_community.vectorstores.qdrant
.Qdrant¶
- class langchain_community.vectorstores.qdrant.Qdrant(client: Any, collection_name: str, embeddings: Optional[Embeddings] = None, content_payload_key: str = 'page_content', metadata_payload_key: str = 'metadata', distance_strategy: str = 'COSINE', vector_name: Optional[str] = None, async_client: Optional[Any] = None, embedding_function: Optional[Callable] = None)[source]¶
Deprecated since version 0.0.37: Use
langchain_qdrant.Qdrant
instead.Qdrant vector store.
To use you should have the
qdrant-client
package installed.Example
from qdrant_client import QdrantClient from langchain_community.vectorstores import Qdrant client = QdrantClient() collection_name = "MyCollection" qdrant = Qdrant(client, collection_name, embedding_function)
Initialize with necessary components.
Attributes
CONTENT_KEY
METADATA_KEY
VECTOR_NAME
embeddings
Access the query embedding object if available.
Methods
__init__
(client, collection_name[, ...])Initialize with necessary components.
aadd_documents
(documents, **kwargs)Async run more documents through the embeddings and add to the vectorstore.
aadd_texts
(texts[, metadatas, ids, batch_size])Run more texts through the embeddings and add to the vectorstore.
aconstruct_instance
(texts, embedding[, ...])add_documents
(documents, **kwargs)Add or update documents in the vectorstore.
add_texts
(texts[, metadatas, ids, batch_size])Run more texts through the embeddings and add to the vectorstore.
adelete
([ids])Delete by vector ID or other criteria.
afrom_documents
(documents, embedding, **kwargs)Async return VectorStore initialized from documents and embeddings.
afrom_texts
(texts, embedding[, metadatas, ...])Construct Qdrant wrapper from a list of texts.
aget_by_ids
(ids, /)Async get documents by their IDs.
amax_marginal_relevance_search
(query[, k, ...])Return docs selected using the maximal marginal relevance.
Return docs selected using the maximal marginal relevance. Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents. :param query: Text to look up documents similar to. :param k: Number of Documents to return. Defaults to 4. :param fetch_k: Number of Documents to fetch to pass to MMR algorithm. Defaults to 20. :param lambda_mult: 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. :param filter: Filter by metadata. Defaults to None. :param search_params: Additional search params :param score_threshold: Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned. :param consistency: Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all queried replicas - 'majority' - query all replicas, but return values present in the majority of replicas - 'quorum' - query the majority of replicas, return values present in all of them - 'all' - query all replicas, and return values present in all replicas :param **kwargs: Any other named arguments to pass through to AsyncQdrantClient.Search().
Return docs selected using the maximal marginal relevance. Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents. :param query: Text to look up documents similar to. :param k: Number of Documents to return. Defaults to 4. :param fetch_k: Number of Documents to fetch to pass to MMR algorithm. Defaults to 20. :param lambda_mult: 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.
as_retriever
(**kwargs)Return VectorStoreRetriever initialized from this VectorStore.
asearch
(query, search_type, **kwargs)Async return docs most similar to query using a specified search type.
asimilarity_search
(query[, k, filter])Return docs most similar to query.
asimilarity_search_by_vector
(embedding[, k, ...])Return docs most similar to embedding vector.
Async return docs and relevance scores in the range [0, 1].
asimilarity_search_with_score
(query[, k, ...])Return docs most similar to query.
Return docs most similar to embedding vector.
construct_instance
(texts, embedding[, ...])delete
([ids])Delete by vector ID or other criteria.
from_documents
(documents, embedding, **kwargs)Return VectorStore initialized from documents and embeddings.
from_existing_collection
(embedding, path, ...)Get instance of an existing Qdrant collection.
from_texts
(texts, embedding[, metadatas, ...])Construct Qdrant wrapper from a list of texts.
get_by_ids
(ids, /)Get documents by their IDs.
max_marginal_relevance_search
(query[, k, ...])Return docs selected using the maximal marginal relevance.
Return docs selected using the maximal marginal relevance.
Return docs selected using the maximal marginal relevance. Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents. :param query: Text to look up documents similar to. :param k: Number of Documents to return. Defaults to 4. :param fetch_k: Number of Documents to fetch to pass to MMR algorithm. Defaults to 20. :param lambda_mult: 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. :param filter: Filter by metadata. Defaults to None. :param search_params: Additional search params :param score_threshold: Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned. :param consistency: Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all queried replicas - 'majority' - query all replicas, but return values present in the majority of replicas - 'quorum' - query the majority of replicas, return values present in all of them - 'all' - query all replicas, and return values present in all replicas :param **kwargs: Any other named arguments to pass through to QdrantClient.search().
search
(query, search_type, **kwargs)Return docs most similar to query using a specified search type.
similarity_search
(query[, k, filter, ...])Return docs most similar to query.
similarity_search_by_vector
(embedding[, k, ...])Return docs most similar to embedding vector.
Return docs and relevance scores in the range [0, 1].
similarity_search_with_score
(query[, k, ...])Return docs most similar to query.
similarity_search_with_score_by_vector
(embedding)Return docs most similar to embedding vector.
- Parameters
client (Any) –
collection_name (str) –
embeddings (Optional[Embeddings]) –
content_payload_key (str) –
metadata_payload_key (str) –
distance_strategy (str) –
vector_name (Optional[str]) –
async_client (Optional[Any]) –
embedding_function (Optional[Callable]) –
- __init__(client: Any, collection_name: str, embeddings: Optional[Embeddings] = None, content_payload_key: str = 'page_content', metadata_payload_key: str = 'metadata', distance_strategy: str = 'COSINE', vector_name: Optional[str] = None, async_client: Optional[Any] = None, embedding_function: Optional[Callable] = None)[source]¶
Initialize with necessary components.
- Parameters
client (Any) –
collection_name (str) –
embeddings (Optional[Embeddings]) –
content_payload_key (str) –
metadata_payload_key (str) –
distance_strategy (str) –
vector_name (Optional[str]) –
async_client (Optional[Any]) –
embedding_function (Optional[Callable]) –
- 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_texts(texts: Iterable[str], metadatas: Optional[List[dict]] = None, ids: Optional[Sequence[str]] = None, batch_size: int = 64, **kwargs: Any) List[str] [source]¶
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.
ids (Optional[Sequence[str]]) – Optional list of ids to associate with the texts. Ids have to be uuid-like strings.
batch_size (int) – How many vectors upload per-request. Default: 64
kwargs (Any) –
- Returns
List of ids from adding the texts into the vectorstore.
- Return type
List[str]
- async classmethod aconstruct_instance(texts: List[str], embedding: Embeddings, location: Optional[str] = None, url: Optional[str] = None, port: Optional[int] = 6333, grpc_port: int = 6334, prefer_grpc: bool = False, https: Optional[bool] = None, api_key: Optional[str] = None, prefix: Optional[str] = None, timeout: Optional[float] = None, host: Optional[str] = None, path: Optional[str] = None, collection_name: Optional[str] = None, distance_func: str = 'Cosine', content_payload_key: str = 'page_content', metadata_payload_key: str = 'metadata', vector_name: Optional[str] = None, shard_number: Optional[int] = None, replication_factor: Optional[int] = None, write_consistency_factor: Optional[int] = None, on_disk_payload: Optional[bool] = None, hnsw_config: Optional[common_types.HnswConfigDiff] = None, optimizers_config: Optional[common_types.OptimizersConfigDiff] = None, wal_config: Optional[common_types.WalConfigDiff] = None, quantization_config: Optional[common_types.QuantizationConfig] = None, init_from: Optional[common_types.InitFrom] = None, on_disk: Optional[bool] = None, force_recreate: bool = False, **kwargs: Any) Qdrant [source]¶
- Parameters
texts (List[str]) –
embedding (Embeddings) –
location (Optional[str]) –
url (Optional[str]) –
port (Optional[int]) –
grpc_port (int) –
prefer_grpc (bool) –
https (Optional[bool]) –
api_key (Optional[str]) –
prefix (Optional[str]) –
timeout (Optional[float]) –
host (Optional[str]) –
path (Optional[str]) –
collection_name (Optional[str]) –
distance_func (str) –
content_payload_key (str) –
metadata_payload_key (str) –
vector_name (Optional[str]) –
shard_number (Optional[int]) –
replication_factor (Optional[int]) –
write_consistency_factor (Optional[int]) –
on_disk_payload (Optional[bool]) –
hnsw_config (Optional[common_types.HnswConfigDiff]) –
optimizers_config (Optional[common_types.OptimizersConfigDiff]) –
wal_config (Optional[common_types.WalConfigDiff]) –
quantization_config (Optional[common_types.QuantizationConfig]) –
init_from (Optional[common_types.InitFrom]) –
on_disk (Optional[bool]) –
force_recreate (bool) –
kwargs (Any) –
- Return type
- 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_texts(texts: Iterable[str], metadatas: Optional[List[dict]] = None, ids: Optional[Sequence[str]] = None, batch_size: int = 64, **kwargs: Any) List[str] [source]¶
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.
ids (Optional[Sequence[str]]) – Optional list of ids to associate with the texts. Ids have to be uuid-like strings.
batch_size (int) – How many vectors upload per-request. Default: 64
kwargs (Any) –
- Returns
List of ids from adding the texts into the vectorstore.
- Return type
List[str]
- async adelete(ids: Optional[List[str]] = None, **kwargs: Any) Optional[bool] [source]¶
Delete by vector ID or other criteria.
- Parameters
ids (Optional[List[str]]) – List of ids to delete.
**kwargs (Any) – Other keyword arguments that subclasses might use.
- Returns
True if deletion is successful, False otherwise.
- Return type
Optional[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
- async classmethod afrom_texts(texts: List[str], embedding: Embeddings, metadatas: Optional[List[dict]] = None, ids: Optional[Sequence[str]] = None, location: Optional[str] = None, url: Optional[str] = None, port: Optional[int] = 6333, grpc_port: int = 6334, prefer_grpc: bool = False, https: Optional[bool] = None, api_key: Optional[str] = None, prefix: Optional[str] = None, timeout: Optional[float] = None, host: Optional[str] = None, path: Optional[str] = None, collection_name: Optional[str] = None, distance_func: str = 'Cosine', content_payload_key: str = 'page_content', metadata_payload_key: str = 'metadata', vector_name: Optional[str] = None, batch_size: int = 64, shard_number: Optional[int] = None, replication_factor: Optional[int] = None, write_consistency_factor: Optional[int] = None, on_disk_payload: Optional[bool] = None, hnsw_config: Optional[common_types.HnswConfigDiff] = None, optimizers_config: Optional[common_types.OptimizersConfigDiff] = None, wal_config: Optional[common_types.WalConfigDiff] = None, quantization_config: Optional[common_types.QuantizationConfig] = None, init_from: Optional[common_types.InitFrom] = None, on_disk: Optional[bool] = None, force_recreate: bool = False, **kwargs: Any) Qdrant [source]¶
Construct Qdrant wrapper from a list of texts.
- Parameters
texts (List[str]) – A list of texts to be indexed in Qdrant.
embedding (Embeddings) – A subclass of Embeddings, responsible for text vectorization.
metadatas (Optional[List[dict]]) – An optional list of metadata. If provided it has to be of the same length as a list of texts.
ids (Optional[Sequence[str]]) – Optional list of ids to associate with the texts. Ids have to be uuid-like strings.
location (Optional[str]) – If :memory: - use in-memory Qdrant instance. If str - use it as a url parameter. If None - fallback to relying on host and port parameters.
url (Optional[str]) – either host or str of “Optional[scheme], host, Optional[port], Optional[prefix]”. Default: None
port (Optional[int]) – Port of the REST API interface. Default: 6333
grpc_port (int) – Port of the gRPC interface. Default: 6334
prefer_grpc (bool) – If true - use gPRC interface whenever possible in custom methods. Default: False
https (Optional[bool]) – If true - use HTTPS(SSL) protocol. Default: None
api_key (Optional[str]) – API key for authentication in Qdrant Cloud. Default: None
prefix (Optional[str]) –
If not None - add prefix to the REST URL path. Example: service/v1 will result in
http://localhost:6333/service/v1/{qdrant-endpoint} for REST API.
Default: None
timeout (Optional[float]) – Timeout for REST and gRPC API requests. Default: 5.0 seconds for REST and unlimited for gRPC
host (Optional[str]) – Host name of Qdrant service. If url and host are None, set to ‘localhost’. Default: None
path (Optional[str]) – Path in which the vectors will be stored while using local mode. Default: None
collection_name (Optional[str]) – Name of the Qdrant collection to be used. If not provided, it will be created randomly. Default: None
distance_func (str) – Distance function. One of: “Cosine” / “Euclid” / “Dot”. Default: “Cosine”
content_payload_key (str) – A payload key used to store the content of the document. Default: “page_content”
metadata_payload_key (str) – A payload key used to store the metadata of the document. Default: “metadata”
vector_name (Optional[str]) – Name of the vector to be used internally in Qdrant. Default: None
batch_size (int) – How many vectors upload per-request. Default: 64
shard_number (Optional[int]) – Number of shards in collection. Default is 1, minimum is 1.
replication_factor (Optional[int]) – Replication factor for collection. Default is 1, minimum is 1. Defines how many copies of each shard will be created. Have effect only in distributed mode.
write_consistency_factor (Optional[int]) – Write consistency factor for collection. Default is 1, minimum is 1. Defines how many replicas should apply the operation for us to consider it successful. Increasing this number will make the collection more resilient to inconsistencies, but will also make it fail if not enough replicas are available. Does not have any performance impact. Have effect only in distributed mode.
on_disk_payload (Optional[bool]) – If true - point`s payload will not be stored in memory. It will be read from the disk every time it is requested. This setting saves RAM by (slightly) increasing the response time. Note: those payload values that are involved in filtering and are indexed - remain in RAM.
hnsw_config (Optional[common_types.HnswConfigDiff]) – Params for HNSW index
optimizers_config (Optional[common_types.OptimizersConfigDiff]) – Params for optimizer
wal_config (Optional[common_types.WalConfigDiff]) – Params for Write-Ahead-Log
quantization_config (Optional[common_types.QuantizationConfig]) – Params for quantization, if None - quantization will be disabled
init_from (Optional[common_types.InitFrom]) – Use data stored in another collection to initialize this collection
force_recreate (bool) – Force recreating the collection
**kwargs (Any) – Additional arguments passed directly into REST client initialization
on_disk (Optional[bool]) –
- Return type
This is a user-friendly interface that: 1. Creates embeddings, one for each text 2. Initializes the Qdrant database as an in-memory docstore by default
(and overridable to a remote docstore)
Adds the text embeddings to the Qdrant database
This is intended to be a quick way to get started.
Example
from langchain_community.vectorstores import Qdrant from langchain_community.embeddings import OpenAIEmbeddings embeddings = OpenAIEmbeddings() qdrant = await Qdrant.afrom_texts(texts, embeddings, "localhost")
- 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 amax_marginal_relevance_search(query: str, k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Document] [source]¶
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. 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.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to AsyncQdrantClient.Search().
- 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, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Document] [source]¶
Return docs selected using the maximal marginal relevance. Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents. :param query: Text to look up documents similar to. :param k: Number of Documents to return. Defaults to 4. :param fetch_k: Number of Documents to fetch to pass to MMR algorithm.
Defaults to 20.
- Parameters
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.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to AsyncQdrantClient.Search().
embedding (List[float]) –
k (int) –
fetch_k (int) –
- Returns
List of Documents selected by maximal marginal relevance and distance for each.
- Return type
List[Document]
- async amax_marginal_relevance_search_with_score_by_vector(embedding: List[float], k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Tuple[Document, float]] [source]¶
Return docs selected using the maximal marginal relevance. Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents. :param query: Text to look up documents similar to. :param k: Number of Documents to return. Defaults to 4. :param fetch_k: Number of Documents to fetch to pass to MMR algorithm.
Defaults to 20.
- Parameters
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.
embedding (List[float]) –
k (int) –
fetch_k (int) –
filter (Optional[MetadataFilter]) –
search_params (Optional[common_types.SearchParams]) –
score_threshold (Optional[float]) –
consistency (Optional[common_types.ReadConsistency]) –
kwargs (Any) –
- Returns
List of Documents selected by maximal marginal relevance and distance for each.
- Return type
List[Tuple[Document, float]]
- as_retriever(**kwargs: Any) VectorStoreRetriever ¶
Return VectorStoreRetriever initialized from this VectorStore.
- Parameters
**kwargs (Any) –
Keyword arguments to pass to the search function. Can include: search_type (Optional[str]): Defines the type of search that
the Retriever should perform. Can be “similarity” (default), “mmr”, or “similarity_score_threshold”.
- search_kwargs (Optional[Dict]): Keyword arguments to pass to the
- search function. Can include things like:
k: Amount of documents to return (Default: 4) 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
- Returns
Retriever class for VectorStore.
- Return type
Examples:
# Retrieve more documents with higher diversity # Useful if your dataset has many similar documents docsearch.as_retriever( search_type="mmr", search_kwargs={'k': 6, 'lambda_mult': 0.25} ) # Fetch more documents for the MMR algorithm to consider # But only return the top 5 docsearch.as_retriever( search_type="mmr", search_kwargs={'k': 5, 'fetch_k': 50} ) # Only retrieve documents that have a relevance score # Above a certain threshold docsearch.as_retriever( search_type="similarity_score_threshold", search_kwargs={'score_threshold': 0.8} ) # Only get the single most similar document from the dataset docsearch.as_retriever(search_kwargs={'k': 1}) # Use a filter to only retrieve documents from a specific paper docsearch.as_retriever( search_kwargs={'filter': {'paper_title':'GPT-4 Technical Report'}} )
- 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 asimilarity_search(query: str, k: int = 4, filter: Optional[MetadataFilter] = None, **kwargs: Any) List[Document] [source]¶
Return docs most similar to query. :param query: Text to look up documents similar to. :param k: Number of Documents to return. Defaults to 4. :param filter: Filter by metadata. Defaults to None.
- Returns
List of Documents most similar to the query.
- Parameters
query (str) –
k (int) –
filter (Optional[MetadataFilter]) –
kwargs (Any) –
- Return type
List[Document]
- async asimilarity_search_by_vector(embedding: List[float], k: int = 4, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, offset: int = 0, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Document] [source]¶
Return docs most similar to embedding vector.
- Parameters
embedding (List[float]) – Embedding vector to look up documents similar to.
k (int) – Number of Documents to return. Defaults to 4.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
offset (int) – Offset of the first result to return. May be used to paginate results. Note: large offset values may cause performance issues.
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to AsyncQdrantClient.Search().
- Returns
List of Documents most similar to the query.
- Return type
List[Document]
- async asimilarity_search_with_relevance_scores(query: str, k: int = 4, **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
- Returns
List of Tuples of (doc, similarity_score)
- Return type
List[Tuple[Document, float]]
- async asimilarity_search_with_score(query: str, k: int = 4, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, offset: int = 0, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Tuple[Document, float]] [source]¶
Return docs most similar to query.
- Parameters
query (str) – Text to look up documents similar to.
k (int) – Number of Documents to return. Defaults to 4.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
offset (int) – Offset of the first result to return. May be used to paginate results. Note: large offset values may cause performance issues.
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to AsyncQdrantClient.Search().
- Returns
List of documents most similar to the query text and distance for each.
- Return type
List[Tuple[Document, float]]
- async asimilarity_search_with_score_by_vector(embedding: List[float], k: int = 4, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, offset: int = 0, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Tuple[Document, float]] [source]¶
Return docs most similar to embedding vector.
- Parameters
embedding (List[float]) – Embedding vector to look up documents similar to.
k (int) – Number of Documents to return. Defaults to 4.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
offset (int) – Offset of the first result to return. May be used to paginate results. Note: large offset values may cause performance issues.
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to AsyncQdrantClient.Search().
- Returns
List of documents most similar to the query text and distance for each.
- Return type
List[Tuple[Document, float]]
- classmethod construct_instance(texts: List[str], embedding: Embeddings, location: Optional[str] = None, url: Optional[str] = None, port: Optional[int] = 6333, grpc_port: int = 6334, prefer_grpc: bool = False, https: Optional[bool] = None, api_key: Optional[str] = None, prefix: Optional[str] = None, timeout: Optional[float] = None, host: Optional[str] = None, path: Optional[str] = None, collection_name: Optional[str] = None, distance_func: str = 'Cosine', content_payload_key: str = 'page_content', metadata_payload_key: str = 'metadata', vector_name: Optional[str] = None, shard_number: Optional[int] = None, replication_factor: Optional[int] = None, write_consistency_factor: Optional[int] = None, on_disk_payload: Optional[bool] = None, hnsw_config: Optional[common_types.HnswConfigDiff] = None, optimizers_config: Optional[common_types.OptimizersConfigDiff] = None, wal_config: Optional[common_types.WalConfigDiff] = None, quantization_config: Optional[common_types.QuantizationConfig] = None, init_from: Optional[common_types.InitFrom] = None, on_disk: Optional[bool] = None, force_recreate: bool = False, **kwargs: Any) Qdrant [source]¶
- Parameters
texts (List[str]) –
embedding (Embeddings) –
location (Optional[str]) –
url (Optional[str]) –
port (Optional[int]) –
grpc_port (int) –
prefer_grpc (bool) –
https (Optional[bool]) –
api_key (Optional[str]) –
prefix (Optional[str]) –
timeout (Optional[float]) –
host (Optional[str]) –
path (Optional[str]) –
collection_name (Optional[str]) –
distance_func (str) –
content_payload_key (str) –
metadata_payload_key (str) –
vector_name (Optional[str]) –
shard_number (Optional[int]) –
replication_factor (Optional[int]) –
write_consistency_factor (Optional[int]) –
on_disk_payload (Optional[bool]) –
hnsw_config (Optional[common_types.HnswConfigDiff]) –
optimizers_config (Optional[common_types.OptimizersConfigDiff]) –
wal_config (Optional[common_types.WalConfigDiff]) –
quantization_config (Optional[common_types.QuantizationConfig]) –
init_from (Optional[common_types.InitFrom]) –
on_disk (Optional[bool]) –
force_recreate (bool) –
kwargs (Any) –
- Return type
- delete(ids: Optional[List[str]] = None, **kwargs: Any) Optional[bool] [source]¶
Delete by vector ID or other criteria.
- Parameters
ids (Optional[List[str]]) – List of ids to delete.
**kwargs (Any) – Other keyword arguments that subclasses might use.
- Returns
True if deletion is successful, False otherwise.
- Return type
Optional[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
- classmethod from_existing_collection(embedding: Embeddings, path: str, collection_name: str, location: Optional[str] = None, url: Optional[str] = None, port: Optional[int] = 6333, grpc_port: int = 6334, prefer_grpc: bool = False, https: Optional[bool] = None, api_key: Optional[str] = None, prefix: Optional[str] = None, timeout: Optional[float] = None, host: Optional[str] = None, **kwargs: Any) Qdrant [source]¶
Get instance of an existing Qdrant collection. This method will return the instance of the store without inserting any new embeddings
- Parameters
embedding (Embeddings) –
path (str) –
collection_name (str) –
location (Optional[str]) –
url (Optional[str]) –
port (Optional[int]) –
grpc_port (int) –
prefer_grpc (bool) –
https (Optional[bool]) –
api_key (Optional[str]) –
prefix (Optional[str]) –
timeout (Optional[float]) –
host (Optional[str]) –
kwargs (Any) –
- Return type
- classmethod from_texts(texts: List[str], embedding: Embeddings, metadatas: Optional[List[dict]] = None, ids: Optional[Sequence[str]] = None, location: Optional[str] = None, url: Optional[str] = None, port: Optional[int] = 6333, grpc_port: int = 6334, prefer_grpc: bool = False, https: Optional[bool] = None, api_key: Optional[str] = None, prefix: Optional[str] = None, timeout: Optional[float] = None, host: Optional[str] = None, path: Optional[str] = None, collection_name: Optional[str] = None, distance_func: str = 'Cosine', content_payload_key: str = 'page_content', metadata_payload_key: str = 'metadata', vector_name: Optional[str] = None, batch_size: int = 64, shard_number: Optional[int] = None, replication_factor: Optional[int] = None, write_consistency_factor: Optional[int] = None, on_disk_payload: Optional[bool] = None, hnsw_config: Optional[common_types.HnswConfigDiff] = None, optimizers_config: Optional[common_types.OptimizersConfigDiff] = None, wal_config: Optional[common_types.WalConfigDiff] = None, quantization_config: Optional[common_types.QuantizationConfig] = None, init_from: Optional[common_types.InitFrom] = None, on_disk: Optional[bool] = None, force_recreate: bool = False, **kwargs: Any) Qdrant [source]¶
Construct Qdrant wrapper from a list of texts.
- Parameters
texts (List[str]) – A list of texts to be indexed in Qdrant.
embedding (Embeddings) – A subclass of Embeddings, responsible for text vectorization.
metadatas (Optional[List[dict]]) – An optional list of metadata. If provided it has to be of the same length as a list of texts.
ids (Optional[Sequence[str]]) – Optional list of ids to associate with the texts. Ids have to be uuid-like strings.
location (Optional[str]) – If :memory: - use in-memory Qdrant instance. If str - use it as a url parameter. If None - fallback to relying on host and port parameters.
url (Optional[str]) – either host or str of “Optional[scheme], host, Optional[port], Optional[prefix]”. Default: None
port (Optional[int]) – Port of the REST API interface. Default: 6333
grpc_port (int) – Port of the gRPC interface. Default: 6334
prefer_grpc (bool) – If true - use gPRC interface whenever possible in custom methods. Default: False
https (Optional[bool]) – If true - use HTTPS(SSL) protocol. Default: None
api_key (Optional[str]) – API key for authentication in Qdrant Cloud. Default: None
prefix (Optional[str]) –
If not None - add prefix to the REST URL path. Example: service/v1 will result in
http://localhost:6333/service/v1/{qdrant-endpoint} for REST API.
Default: None
timeout (Optional[float]) – Timeout for REST and gRPC API requests. Default: 5.0 seconds for REST and unlimited for gRPC
host (Optional[str]) – Host name of Qdrant service. If url and host are None, set to ‘localhost’. Default: None
path (Optional[str]) – Path in which the vectors will be stored while using local mode. Default: None
collection_name (Optional[str]) – Name of the Qdrant collection to be used. If not provided, it will be created randomly. Default: None
distance_func (str) – Distance function. One of: “Cosine” / “Euclid” / “Dot”. Default: “Cosine”
content_payload_key (str) – A payload key used to store the content of the document. Default: “page_content”
metadata_payload_key (str) – A payload key used to store the metadata of the document. Default: “metadata”
vector_name (Optional[str]) – Name of the vector to be used internally in Qdrant. Default: None
batch_size (int) – How many vectors upload per-request. Default: 64
shard_number (Optional[int]) – Number of shards in collection. Default is 1, minimum is 1.
replication_factor (Optional[int]) – Replication factor for collection. Default is 1, minimum is 1. Defines how many copies of each shard will be created. Have effect only in distributed mode.
write_consistency_factor (Optional[int]) – Write consistency factor for collection. Default is 1, minimum is 1. Defines how many replicas should apply the operation for us to consider it successful. Increasing this number will make the collection more resilient to inconsistencies, but will also make it fail if not enough replicas are available. Does not have any performance impact. Have effect only in distributed mode.
on_disk_payload (Optional[bool]) – If true - point`s payload will not be stored in memory. It will be read from the disk every time it is requested. This setting saves RAM by (slightly) increasing the response time. Note: those payload values that are involved in filtering and are indexed - remain in RAM.
hnsw_config (Optional[common_types.HnswConfigDiff]) – Params for HNSW index
optimizers_config (Optional[common_types.OptimizersConfigDiff]) – Params for optimizer
wal_config (Optional[common_types.WalConfigDiff]) – Params for Write-Ahead-Log
quantization_config (Optional[common_types.QuantizationConfig]) – Params for quantization, if None - quantization will be disabled
init_from (Optional[common_types.InitFrom]) – Use data stored in another collection to initialize this collection
force_recreate (bool) – Force recreating the collection
**kwargs (Any) – Additional arguments passed directly into REST client initialization
on_disk (Optional[bool]) –
- Return type
This is a user-friendly interface that: 1. Creates embeddings, one for each text 2. Initializes the Qdrant database as an in-memory docstore by default
(and overridable to a remote docstore)
Adds the text embeddings to the Qdrant database
This is intended to be a quick way to get started.
Example
from langchain_community.vectorstores import Qdrant from langchain_community.embeddings import OpenAIEmbeddings embeddings = OpenAIEmbeddings() qdrant = Qdrant.from_texts(texts, embeddings, "localhost")
- 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.
- max_marginal_relevance_search(query: str, k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Document] [source]¶
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. 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.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to QdrantClient.search()
- 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, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Document] [source]¶
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.
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.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to QdrantClient.search()
- Returns
List of Documents selected by maximal marginal relevance.
- Return type
List[Document]
- max_marginal_relevance_search_with_score_by_vector(embedding: List[float], k: int = 4, fetch_k: int = 20, lambda_mult: float = 0.5, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Tuple[Document, float]] [source]¶
Return docs selected using the maximal marginal relevance. Maximal marginal relevance optimizes for similarity to query AND diversity among selected documents. :param query: Text to look up documents similar to. :param k: Number of Documents to return. Defaults to 4. :param fetch_k: Number of Documents to fetch to pass to MMR algorithm.
Defaults to 20.
- Parameters
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.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to QdrantClient.search()
embedding (List[float]) –
k (int) –
fetch_k (int) –
- Returns
List of Documents selected by maximal marginal relevance and distance 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]
- similarity_search(query: str, k: int = 4, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, offset: int = 0, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Document] [source]¶
Return docs most similar to query.
- Parameters
query (str) – Text to look up documents similar to.
k (int) – Number of Documents to return. Defaults to 4.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
offset (int) – Offset of the first result to return. May be used to paginate results. Note: large offset values may cause performance issues.
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to QdrantClient.search()
- Returns
List of Documents most similar to the query.
- Return type
List[Document]
- similarity_search_by_vector(embedding: List[float], k: int = 4, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, offset: int = 0, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Document] [source]¶
Return docs most similar to embedding vector.
- Parameters
embedding (List[float]) – Embedding vector to look up documents similar to.
k (int) – Number of Documents to return. Defaults to 4.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
offset (int) – Offset of the first result to return. May be used to paginate results. Note: large offset values may cause performance issues.
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to QdrantClient.search()
- Returns
List of Documents most similar to the query.
- Return type
List[Document]
- similarity_search_with_relevance_scores(query: str, k: int = 4, **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.
- Returns
List of Tuples of (doc, similarity_score).
- Return type
List[Tuple[Document, float]]
- similarity_search_with_score(query: str, k: int = 4, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, offset: int = 0, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Tuple[Document, float]] [source]¶
Return docs most similar to query.
- Parameters
query (str) – Text to look up documents similar to.
k (int) – Number of Documents to return. Defaults to 4.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
offset (int) – Offset of the first result to return. May be used to paginate results. Note: large offset values may cause performance issues.
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to QdrantClient.search()
- Returns
List of documents most similar to the query text and distance for each.
- Return type
List[Tuple[Document, float]]
- similarity_search_with_score_by_vector(embedding: List[float], k: int = 4, filter: Optional[MetadataFilter] = None, search_params: Optional[common_types.SearchParams] = None, offset: int = 0, score_threshold: Optional[float] = None, consistency: Optional[common_types.ReadConsistency] = None, **kwargs: Any) List[Tuple[Document, float]] [source]¶
Return docs most similar to embedding vector.
- Parameters
embedding (List[float]) – Embedding vector to look up documents similar to.
k (int) – Number of Documents to return. Defaults to 4.
filter (Optional[MetadataFilter]) – Filter by metadata. Defaults to None.
search_params (Optional[common_types.SearchParams]) – Additional search params
offset (int) – Offset of the first result to return. May be used to paginate results. Note: large offset values may cause performance issues.
score_threshold (Optional[float]) – Define a minimal score threshold for the result. If defined, less similar results will not be returned. Score of the returned result might be higher or smaller than the threshold depending on the Distance function used. E.g. for cosine similarity only higher scores will be returned.
consistency (Optional[common_types.ReadConsistency]) –
Read consistency of the search. Defines how many replicas should be queried before returning the result. Values: - int - number of replicas to query, values should present in all
queried replicas
- ’majority’ - query all replicas, but return values present in the
majority of replicas
- ’quorum’ - query the majority of replicas, return values present in
all of them
’all’ - query all replicas, and return values present in all replicas
**kwargs (Any) – Any other named arguments to pass through to QdrantClient.search()
- Returns
List of documents most similar to the query text and distance for each.
- Return type
List[Tuple[Document, float]]