ingest.stores.sparse

full-text search engine

SparseStore

 SparseStore (persist_directory:Optional[str]=None,
              index_name:str='myindex', **kwargs)

Helper class that provides a standard way to create an ABC using inheritance.

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default_schema

 default_schema ()

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SparseStore.get_db

 SparseStore.get_db ()

Get raw index

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SparseStore.exists

 SparseStore.exists ()

Returns True if documents have been added to search index

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SparseStore.add_documents

 SparseStore.add_documents
                            (docs:Sequence[langchain_core.documents.base.D
                            ocument], limitmb:int=1024, verbose:bool=True,
                            **kwargs)

Indexes documents. Extra kwargs supplied to TextStore.ix.writer.

	Type	Default	Details
docs	Sequence		list of LangChain Documents
limitmb	int	1024	maximum memory in megabytes to use
verbose	bool	True	Set to False to disable progress bar
kwargs	VAR_KEYWORD

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SparseStore.remove_document

 SparseStore.remove_document (value:str, field:str='id')

Remove document with corresponding value and field. Default field is the id field.

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SparseStore.update_documents

 SparseStore.update_documents (doc_dicts:dict, **kwargs)

Update a set of documents (doc in index with same ID will be over-written)

	Type	Details
doc_dicts	dict	dictionary with keys ‘page_content’, ‘source’, ‘id’, etc.
kwargs	VAR_KEYWORD

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SparseStore.get_all_docs

 SparseStore.get_all_docs ()

Returns a generator to iterate through all indexed documents

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SparseStore.get_doc

 SparseStore.get_doc (id:str)

Get an indexed record by ID

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SparseStore.get_size

 SparseStore.get_size ()

Gets size of index

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SparseStore.erase

 SparseStore.erase (confirm=True)

Clears index

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SparseStore.query

 SparseStore.query (q:str, fields:Sequence=['page_content'],
                    highlight:bool=True, limit:int=10, page:int=1,
                    return_dict:bool=False,
                    filters:Optional[Dict[str,str]]=None,
                    where_document:Optional[str]=None)

*Queries the index

Args

q: the query string
fields: a list of fields to search
highlight: If True, highlight hits
limit: results per page
page: page of hits to return
return_dict: If True, return list of dictionaries instead of LangChain Document objects
filters: filter results by field values (e.g., {‘extension’:‘pdf’})
where_document: optional query to further filter results*

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SparseStore.semantic_search

 SparseStore.semantic_search (query, k:int=4, n_candidates=50,
                              filters:Optional[Dict[str,str]]=None,
                              where_document:Optional[str]=None, **kwargs)

Retrieves results based on semantic similarity to supplied query.

	Type	Default	Details
query
k	int	4	number of records to return based on highest semantic similarity scores.
n_candidates	int	50	Number of records to consider (for which we compute embeddings on-the-fly)
filters	Optional	None	filter sources by field values (e.g., {‘table’:True})
where_document	Optional	None	a boolean query to filter results further (e.g., “climate” AND extension:pdf)
kwargs	VAR_KEYWORD

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VectorStore.check

 VectorStore.check ()

Raise exception if VectorStore.exists() returns False

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VectorStore.ingest

 VectorStore.ingest (source_directory:str, chunk_size:int=500,
                     chunk_overlap:int=50,
                     ignore_fn:Optional[Callable]=None,
                     batch_size:int=41000, **kwargs)

Ingests all documents in source_directory (previously-ingested documents are ignored). When retrieved, the Document objects will each have a metadata dict with the absolute path to the file in metadata["source"]. Extra kwargs fed to ingest.load_single_document.

	Type	Default	Details
source_directory	str		path to folder containing document store
chunk_size	int	500	text is split to this many characters by langchain.text_splitter.RecursiveCharacterTextSplitter
chunk_overlap	int	50	character overlap between chunks in `langchain.text_splitter.RecursiveCharacterTextSplitter`
ignore_fn	Optional	None	Optional function that accepts the file path (including file name) as input and returns `True` if file path should not be ingested.
batch_size	int	41000	batch size used when processing documents
kwargs	VAR_KEYWORD
Returns	None