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retrieval.py
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retrieval.py
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# retrieval.py
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# --- 确认 Import 路径已更新 ---
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from milvus_haystack import MilvusDocumentStore # 用于类型提示
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from milvus_haystack.milvus_embedding_retriever import (
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MilvusEmbeddingRetriever,
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) # 使用正确的 integration import
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# 从配置导入 top_k
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from config import RETRIEVER_TOP_K
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def initialize_vector_retriever(
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document_store: MilvusDocumentStore,
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) -> MilvusEmbeddingRetriever:
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"""
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Initializes the MilvusEmbeddingRetriever using milvus-haystack package.
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Requires a correctly initialized MilvusDocumentStore instance.
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"""
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print(f"Initializing Milvus Embedding Retriever with top_k={RETRIEVER_TOP_K}")
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# 初始化 MilvusEmbeddingRetriever 实例
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# 它需要 document_store 实例来进行实际的搜索操作
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# top_k 参数控制返回文档的数量
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retriever = MilvusEmbeddingRetriever(
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document_store=document_store,
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top_k=RETRIEVER_TOP_K,
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# 其他可选参数可以根据需要添加,例如 filters_policy
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)
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print("Milvus Embedding Retriever initialized.")
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return retriever
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