class langchain_community.document_compressors.llmlingua_filter.LLMLinguaCompressor[source]

Bases: BaseDocumentCompressor

Compress using LLMLingua Project.

Create a new model by parsing and validating input data from keyword arguments.

Raises ValidationError if the input data cannot be parsed to form a valid model.

param additional_compress_kwargs: dict = {'condition_compare': True, 'condition_in_question': 'after', 'context_budget': '+100', 'dynamic_context_compression_ratio': 0.4, 'reorder_context': 'sort'}

Extra compression arguments

param device_map: str = 'cuda'

The device to use for llm lingua

param instruction: str = 'Given this documents, please answer the final question'

The instruction for the LLM

param lingua: Any = None

The instance of the llm linqua

param model_config: dict = {}

Custom configuration for the model

param model_name: str = 'NousResearch/Llama-2-7b-hf'

The hugging face model to use

param open_api_config: dict = {}

open_api configuration

param rank_method: str = 'longllmlingua'

The ranking method to use

param target_token: int = 300

The target number of compressed tokens

async acompress_documents(documents: Sequence[Document], query: str, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None) Sequence[Document]

Compress retrieved documents given the query context.

Return type


compress_documents(documents: Sequence[Document], query: str, callbacks: Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]] = None) Sequence[Document][source]

Compress documents using BAAI/bge-reranker models.

  • documents (Sequence[Document]) – A sequence of documents to compress.

  • query (str) – The query to use for compressing the documents.

  • callbacks (Optional[Union[List[BaseCallbackHandler], BaseCallbackManager]]) – Callbacks to run during the compression process.


A sequence of compressed documents.

Return type


extract_ref_id_tuples_and_clean(contents: List[str]) List[Tuple[str, int]][source]

Extracts reference IDs from the contents and cleans up the ref tags.

This function processes a list of strings, searching for reference ID tags at the beginning and end of each string. When a ref tag is found, it is removed from the string, and its ID is recorded. If no ref ID is found, a generic ID of “-1” is assigned.

The search for ref tags is performed only at the beginning and end of the string, with the assumption that there will be at most one ref ID per string. Malformed ref tags are handled gracefully.


contents (List[str]) – A list of contents to be processed.


The cleaned string and the associated ref ID.

Return type

List[Tuple[str, int]]


>>> strings_list = [
        '<#ref0#> Example content <#ref0#>',
        'Content with no ref ID.'
>>> extract_ref_id_tuples_and_clean(strings_list)
[('Example content', 0), ('Content with no ref ID.', -1)]

Examples using LLMLinguaCompressor