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9 changes: 6 additions & 3 deletions MCP/server/database/vector_store.py
Original file line number Diff line number Diff line change
Expand Up @@ -190,7 +190,8 @@ async def keyword_search(
scores = []
for idx, row in df.iterrows():
score = 0
entry_keywords = set(k.lower() for k in (row["keywords"] or []))
row_keywords = row["keywords"] if row["keywords"] is not None else []
entry_keywords = set(k.lower() for k in row_keywords)
entry_text = row["lossless_restatement"].lower()

for kw in keywords:
Expand Down Expand Up @@ -267,7 +268,8 @@ async def structured_search(
if persons:
persons_lower = set(p.lower() for p in persons)
for i, row in df.iterrows():
row_persons = set(p.lower() for p in (row["persons"] or []))
persons_val = row["persons"] if row["persons"] is not None else []
row_persons = set(p.lower() for p in persons_val)
if not persons_lower.intersection(row_persons):
mask[i] = False

Expand All @@ -284,7 +286,8 @@ async def structured_search(
entities_lower = set(e.lower() for e in entities)
for i, row in df.iterrows():
if mask[i]:
row_entities = set(e.lower() for e in (row["entities"] or []))
entities_val = row["entities"] if row["entities"] is not None else []
row_entities = set(e.lower() for e in entities_val)
if not entities_lower.intersection(row_entities):
mask[i] = False

Expand Down