From 3f571a13c2d443cec16500c807081ef99908ef77 Mon Sep 17 00:00:00 2001
From: Kevin Hu <kevinhu.sh@gmail.com>
Date: Fri, 13 Sep 2024 17:19:47 +0800
Subject: [PATCH] fix empty children in mindmap (#2418)

### What problem does this PR solve?

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
---
 graphrag/mind_map_extractor.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/graphrag/mind_map_extractor.py b/graphrag/mind_map_extractor.py
index 9a5560daf..e33650ba5 100644
--- a/graphrag/mind_map_extractor.py
+++ b/graphrag/mind_map_extractor.py
@@ -66,7 +66,7 @@ class MindMapExtractor:
             obj = [obj]
         if isinstance(obj, list):
             for i in obj: keyset.add(i)
-            return [{"id": re.sub(r"\*+", "", i), "children": []} for i in obj]
+            return [{"id": re.sub(r"\*+", "", i), "children": []} for i in obj if re.sub(r"\*+", "", i)]
         arr = []
         for k, v in obj.items():
             k = self._key(k)