From 4fcd05ad23f880e2c03bf407a11d46266ced118d Mon Sep 17 00:00:00 2001
From: GYH <43509927+guoyuhao2330@users.noreply.github.com>
Date: Mon, 24 Jun 2024 12:25:50 +0800
Subject: [PATCH] fix Rerank Vector Similarity Score (#1249)

### What problem does this PR solve?

#1243
### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
---
 rag/llm/rerank_model.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rag/llm/rerank_model.py b/rag/llm/rerank_model.py
index 7e6b73403..ba81273ce 100644
--- a/rag/llm/rerank_model.py
+++ b/rag/llm/rerank_model.py
@@ -71,6 +71,7 @@ class DefaultRerank(Base):
         res = []
         for i in range(0, len(pairs), batch_size):
             scores = self._model.compute_score(pairs[i:i + batch_size], max_length=2048)
+            scores = sigmoid(np.array(scores)).tolist()
             if isinstance(scores, float): res.append(scores)
             else:  res.extend(scores)
         return np.array(res), token_count