AmazonKnowledgeBasesRetriever

Amazon Bedrock Knowledge Bases retrieval.

See https://aws.amazon.com/bedrock/knowledge-bases for more info.

Args:
    knowledge_base_id: Knowledge Base ID.
    region_name: The aws region e.g., `us-west-2`.
        Fallback to AWS_DEFAULT_REGION env variable or region specified in
        ~/.aws/config.
    credentials_profile_name: The name of the profile in the ~/.aws/credentials
        or ~/.aws/config files, which has either access keys or role information
        specified. If not specified, the default credential profile or, if on an
        EC2 instance, credentials from IMDS will be used.
    client: boto3 client for bedrock agent runtime.
    retrieval_config: Optional configuration for retrieval specified as a
        Python object (RetrievalConfig) or as a dictionary
Example:
    .. code-block:: python
        from langchain_community.retrievers import AmazonKnowledgeBasesRetriever

retriever = AmazonKnowledgeBasesRetriever( knowledge_base_id="", retrieval_config={ "vectorSearchConfiguration": { "numberOfResults": 4 } }, )