Update app.py

app.py

@@ -13,7 +13,7 @@ from qa_vector_store import build_qa_vector_store, retrieve_and_rerank, generate
 # 初始化模型和資料庫
 model_name = "sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2"
 collection_name = model_name.split("/")[-1]
-cross_encoder_model = "cross-encoder/mmarco-mMiniLMv2-L12-H384-v1"
+cross_encoder_model = CrossEncoder("cross-encoder/mmarco-mMiniLMv2-L12-H384-v1")
 tokenizer = AutoTokenizer.from_pretrained("Qwen/Qwen2-0.5B-Instruct", trust_remote_code=True)
 llm_model = AutoModelForCausalLM.from_pretrained("Qwen/Qwen2-0.5B-Instruct", trust_remote_code=True)