LlamaIndex Postprocessor Integration: Alibabacloud_Aisearch_Rerank

Installation

pip install llama-index-postprocessor-alibabacloud-aisearch-rerank

Usage

For further details, please visit ranker-api-details.

You can specify the endpoint and aisearch_api_key in the constructor, or set the environment variables AISEARCH_ENDPOINT and AISEARCH_API_KEY.

from llama_index.core.data_structs import Node
from llama_index.core.schema import NodeWithScore
from llama_index.postprocessor.alibabacloud_aisearch_rerank import (
    AlibabaCloudAISearchRerank,
)

nodes = [
    NodeWithScore(
        node=Node(id_="1", text="<text1>"),
        score=0.7,
    ),
    NodeWithScore(
        node=Node(id_="2", text="<text2>"),
        score=0.8,
    ),
    NodeWithScore(
        node=Node(id_="3", text="<text3>"),
        score=0.1,
    ),
]
reranker = AlibabaCloudAISearchRerank(top_n=2)
new_nodes = reranker.postprocess_nodes(nodes, query_str="<query>")
for node in new_nodes:
    print(f"{node.node.text[:20]}\t{node.score}")

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