Update src/rag_engine/build_vector_db.py

src/rag_engine/build_vector_db.py

@@ -28,7 +28,9 @@ class MindGuardVectorDB:
         
         # Initialize the Embedding Engine (all-MiniLM-L6-v2)
         # This is a small, lightning-fast Hugging Face model that turns sentences into math vectors
-        self.embedding_fn = embedding_functions.DefaultEmbeddingFunction()
+        self.embedding_fn = embedding_functions.SentenceTransformerEmbeddingFunction(
+            model_name="BAAI/bge-base-en-v1.5"
+        )
         
         # Create or load the 'clinical_guidelines' collection
         self.collection = self.chroma_client.get_or_create_collection(