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Merge pull request #1737 from danielaskdd/fix-empty-entity-name

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fix: prevent empty entity names after normalization in extraction
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Daniel.y 2025-07-05 12:09:12 +08:00 • committed by GitHub
commit 3be908d81f
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1 changed files with 21 additions and 0 deletions
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21
lightrag/operate.py
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@ -168,6 +168,13 @@ async def _handle_single_entity_extraction(
# Normalize entity name
entity_name = normalize_extracted_info(entity_name, is_entity=True)
# Check if entity name became empty after normalization
if not entity_name or not entity_name.strip():
logger.warning(
f"Entity extraction error: entity name became empty after normalization. Original: '{record_attributes[1]}'"
)
return None
# Clean and validate entity type
entity_type = clean_str(record_attributes[2]).strip('"')
if not entity_type.strip() or entity_type.startswith('("'):
@ -209,6 +216,20 @@ async def _handle_single_relationship_extraction(
# Normalize source and target entity names
source = normalize_extracted_info(source, is_entity=True)
target = normalize_extracted_info(target, is_entity=True)
# Check if source or target became empty after normalization
if not source or not source.strip():
logger.warning(
f"Relationship extraction error: source entity became empty after normalization. Original: '{record_attributes[1]}'"
)
return None
if not target or not target.strip():
logger.warning(
f"Relationship extraction error: target entity became empty after normalization. Original: '{record_attributes[2]}'"
)
return None
if source == target:
logger.debug(
f"Relationship source and target are the same in: {record_attributes}"