From df9b7b2fe9d05e49755335ceebf7dd45433dddba Mon Sep 17 00:00:00 2001
From: Kevin Hu <kevinhu.sh@gmail.com>
Date: Thu, 6 Mar 2025 15:05:19 +0800
Subject: [PATCH] Fix: rerank issue. (#5696)

### What problem does this PR solve?

#5673

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
---
 rag/llm/rerank_model.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rag/llm/rerank_model.py b/rag/llm/rerank_model.py
index 1ea2faedf..89cf12675 100644
--- a/rag/llm/rerank_model.py
+++ b/rag/llm/rerank_model.py
@@ -15,6 +15,7 @@
 #
 import re
 import threading
+from collections.abc import Iterable
 from urllib.parse import urljoin
 
 import requests
@@ -135,6 +136,8 @@ class DefaultRerank(Base):
         else:
             scores = self._model.compute_score(batch_pairs, max_length=max_length)
         scores = sigmoid(np.array(scores)).tolist()
+        if not isinstance(scores, Iterable):
+            scores = [scores]
         return scores
 
     def similarity(self, query: str, texts: list):