Keyword Table Retrievers

Query for KeywordTableIndex.

class llama_index.indices.keyword_table.retrievers.BaseKeywordTableRetriever(index: BaseKeywordTableIndex, keyword_extract_template: Optional[BasePromptTemplate] = None, query_keyword_extract_template: Optional[BasePromptTemplate] = None, max_keywords_per_query: int = 10, num_chunks_per_query: int = 10, callback_manager: Optional[CallbackManager] = None, **kwargs: Any)

Base Keyword Table Retriever.

Arguments are shared among subclasses.

Parameters
get_prompts() Dict[str, BasePromptTemplate]

Get a prompt.

get_service_context() Optional[ServiceContext]

Attempts to resolve a service context. Short-circuits at self.service_context, self._service_context, or self._index.service_context.

retrieve(str_or_query_bundle: Union[str, QueryBundle]) List[NodeWithScore]

Retrieve nodes given query.

Parameters

str_or_query_bundle (QueryType) – Either a query string or a QueryBundle object.

update_prompts(prompts_dict: Dict[str, BasePromptTemplate]) None

Update prompts.

Other prompts will remain in place.

class llama_index.indices.keyword_table.retrievers.KeywordTableGPTRetriever(index: BaseKeywordTableIndex, keyword_extract_template: Optional[BasePromptTemplate] = None, query_keyword_extract_template: Optional[BasePromptTemplate] = None, max_keywords_per_query: int = 10, num_chunks_per_query: int = 10, callback_manager: Optional[CallbackManager] = None, **kwargs: Any)

Keyword Table Index GPT Retriever.

Extracts keywords using GPT. Set when using retriever_mode=”default”.

See BaseGPTKeywordTableQuery for arguments.

get_prompts() Dict[str, BasePromptTemplate]

Get a prompt.

get_service_context() Optional[ServiceContext]

Attempts to resolve a service context. Short-circuits at self.service_context, self._service_context, or self._index.service_context.

retrieve(str_or_query_bundle: Union[str, QueryBundle]) List[NodeWithScore]

Retrieve nodes given query.

Parameters

str_or_query_bundle (QueryType) – Either a query string or a QueryBundle object.

update_prompts(prompts_dict: Dict[str, BasePromptTemplate]) None

Update prompts.

Other prompts will remain in place.

class llama_index.indices.keyword_table.retrievers.KeywordTableRAKERetriever(index: BaseKeywordTableIndex, keyword_extract_template: Optional[BasePromptTemplate] = None, query_keyword_extract_template: Optional[BasePromptTemplate] = None, max_keywords_per_query: int = 10, num_chunks_per_query: int = 10, callback_manager: Optional[CallbackManager] = None, **kwargs: Any)

Keyword Table Index RAKE Retriever.

Extracts keywords using RAKE keyword extractor. Set when retriever_mode=”rake”.

See BaseGPTKeywordTableQuery for arguments.

get_prompts() Dict[str, BasePromptTemplate]

Get a prompt.

get_service_context() Optional[ServiceContext]

Attempts to resolve a service context. Short-circuits at self.service_context, self._service_context, or self._index.service_context.

retrieve(str_or_query_bundle: Union[str, QueryBundle]) List[NodeWithScore]

Retrieve nodes given query.

Parameters

str_or_query_bundle (QueryType) – Either a query string or a QueryBundle object.

update_prompts(prompts_dict: Dict[str, BasePromptTemplate]) None

Update prompts.

Other prompts will remain in place.

class llama_index.indices.keyword_table.retrievers.KeywordTableSimpleRetriever(index: BaseKeywordTableIndex, keyword_extract_template: Optional[BasePromptTemplate] = None, query_keyword_extract_template: Optional[BasePromptTemplate] = None, max_keywords_per_query: int = 10, num_chunks_per_query: int = 10, callback_manager: Optional[CallbackManager] = None, **kwargs: Any)

Keyword Table Index Simple Retriever.

Extracts keywords using simple regex-based keyword extractor. Set when retriever_mode=”simple”.

See BaseGPTKeywordTableQuery for arguments.

get_prompts() Dict[str, BasePromptTemplate]

Get a prompt.

get_service_context() Optional[ServiceContext]

Attempts to resolve a service context. Short-circuits at self.service_context, self._service_context, or self._index.service_context.

retrieve(str_or_query_bundle: Union[str, QueryBundle]) List[NodeWithScore]

Retrieve nodes given query.

Parameters

str_or_query_bundle (QueryType) – Either a query string or a QueryBundle object.

update_prompts(prompts_dict: Dict[str, BasePromptTemplate]) None

Update prompts.

Other prompts will remain in place.