Update advanced_rag.py

advanced_rag.py

@@ -26,10 +26,11 @@ class AdvancedRAG:
         self.embedding_service = embedding_service
         self.qdrant_service = qdrant_service
         
-        # Initialize Cross-Encoder for reranking (state-of-the-art)
+        # Initialize Cross-Encoder for reranking (multilingual for Vietnamese support)
         print("Loading Cross-Encoder model for reranking...")
-        self.cross_encoder = CrossEncoder('cross-encoder/ms-marco-MiniLM-L-6-v2')
-        print("✓ Cross-Encoder loaded")
+        # Use multilingual model instead of English-only ms-marco
+        self.cross_encoder = CrossEncoder('cross-encoder/mmarco-mMiniLMv2-L12-H384-v1')
+        print("✓ Cross-Encoder loaded (multilingual)")
 
     def expand_query_llm(
         self,