indexers.hooks.default_hooks.postprocessing

indexers.hooks.default_hooks.postprocessing

Classes

Name	Description
DeduplicationHook	A post-processing hook to remove duplicate knowledgebase entries.
RagHook	A post-processing hook to perform Retrieval Augmented Generation.

DeduplicationHook

indexers.hooks.default_hooks.postprocessing.DeduplicationHook(
    score_aggregation_method='max',
)

A post-processing hook to remove duplicate knowledgebase entries.

Designed to operate on a VectorStoreSearchOutput, i.e. the output of the VectorStore.search() method. Deduplicates entries that share the same label within each query’s results, aggregating their scores using the specified method.

Attributes

Name	Type	Description
score_aggregation_method	str	The name of the score aggregation method in use. Either “max” or “mean”.
score_aggregator	Callable	The callable used to aggregate scores for deduplicated entries.

RagHook

indexers.hooks.default_hooks.postprocessing.RagHook(
    context_prompt='',
    response_template='',
    llm_response_parser=None,
    project_id=None,
    api_key=None,
    location='europe-west2',
    model_name='gemini-2.5-flash',
    **client_kwargs,
)

A post-processing hook to perform Retrieval Augmented Generation.

Designed to operate on a VectorStoreSearchOutput, i.e. the output of the VectorStore.search() method. Calls a generative LLM for each unique query in the search output, appending a RAG_response column to the result.

Attributes

Name	Type	Description
model_name	str	The name of the generative model to use.
context_prompt	str	The system prompt providing context to the LLM.
response_template	str	A template describing the expected output format for each row in the search results.
llm_response_parser	Callable	A callable for parsing the raw LLM response string into a list of per-row values.
client	genai.Client	The initialised GenAI client.
config_generator	genai.types.GenerateContentConfig	The GenerateContentConfig class used to configure LLM calls.
client_kwargs	dict	Keyword arguments used to initialise the GenAI client.