expand query factor changed

server/data/vector_store/chroma.sqlite3

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:d81532131ff19b3083aa299445fb4fdb4971b083f243ea667d9280739775bbf4
+oid sha256:79d8716bdd9a6ff37cde113f88263f3c055ee513875da56dc02061c6aec03bcc
 size 18223104

server/main.py

@@ -35,8 +35,7 @@ else:
     DB_DIR = Path(__file__).resolve().parent / "data"
     LOGS_DIR = DB_DIR
 
-CURRENT_FILE_DIR = Path(__file__).resolve().parent
-CACHE_FILE = CURRENT_FILE_DIR / "data" / "bm25_index.pkl"
+CACHE_FILE = DB_DIR / "bm25_index.pkl"
 LOGS_FILE = LOGS_DIR / "all_chats.csv"
 
 @asynccontextmanager
@@ -132,6 +131,7 @@ def main_chat(query,fast_llm,heavy_llm,vector_retriever,bm25_retriever,chunks_di
     return "I didn't quite understand that intent. Could you rephrase your question about MANIT?"
     
 def add_logs_to_csv(query:str, answer:str):
+    LOGS_FILE.parent.mkdir(parents=True, exist_ok=True)
     with open(LOGS_FILE,mode='a',encoding='utf-8',newline='') as f:
         writer= csv.writer(f)
         writer.writerow([datetime.now(),query,answer])

server/utils/ExpandQuery.py

@@ -1,6 +1,6 @@
 from langchain_core.messages import HumanMessage, SystemMessage
 
-def expand_query(query,llm,factor=2):
+def expand_query(query,llm,factor=3):
     system_instruction= f"""
     You are an expert academic search optimization assistant for a college RAG database.
     Your job is to rewrite the user's input query into {factor} different, keyword-rich search variations.