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add _relevance_score_fn #211

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merged 1 commit into from
Dec 20, 2023
Merged

add _relevance_score_fn #211

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11 changes: 10 additions & 1 deletion src/bisheng-langchain/bisheng_langchain/vectorstores/milvus.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
from __future__ import annotations

import logging
from typing import Any, Iterable, List, Optional, Tuple, Union
from typing import Any, Iterable, List, Optional, Tuple, Union, Callable
from uuid import uuid4

import numpy as np
Expand Down Expand Up @@ -880,3 +880,12 @@ def from_texts(
)
vector_db.add_texts(texts=texts, metadatas=metadatas)
return vector_db

@staticmethod
def _relevance_score_fn(distance: float) -> float:
"""Normalize the distance to a score on a scale [0, 1]."""
# Todo: normalize the es score on a scale [0, 1]
return 1 - distance

def _select_relevance_score_fn(self) -> Callable[[float], float]:
return self._relevance_score_fn