llama-index postprocessor bedrock rerank integration
Project description
LlamaIndex Postprocessor Integration: AWS Bedrock Rerankers
Sample Usage
from llama_index.core import VectorStoreIndex, SimpleDirectoryReader
from llama_index.postprocessor.bedrock_rerank import BedrockRerank
documents = SimpleDirectoryReader("./data/paul_graham/").load_data()
index = VectorStoreIndex.from_documents(documents=documents)
reranker = BedrockRerank(
top_n=3,
rerank_model_name="cohere.rerank-v3-5:0",
region_name="us-west-2",
)
query_engine = index.as_query_engine(
similarity_top_k=10,
node_postprocessors=[reranker],
)
response = query_engine.query(
"What did Sam Altman do in this essay?",
)
print(response)
print(response.source_nodes)
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