update: fix some bug

app.py

@@ -175,10 +175,10 @@ def greet(mode, language, input_text):
     sub_texts = segment_text(split_texts, language=language)
     detected = []
     if language == "Chinese":
-        model = DiscrepancyEstimator(load_directory="JiachenFu/Qwen2-0.5B-detectanyllm-detector-zh").to(device)
+        model = DiscrepancyEstimator(pretrained_ckpt="JiachenFu/Qwen2-0.5B-detectanyllm-detector-zh").to(device)
         prob_estimator = zh_prob_estimator
     else:
-        model = DiscrepancyEstimator(load_directory="JiachenFu/Qwen2-0.5B-detectanyllm-detector-en").to(device)
+        model = DiscrepancyEstimator(pretrained_ckpt="JiachenFu/Qwen2-0.5B-detectanyllm-detector-en").to(device)
         prob_estimator = en_prob_estimator
     model.eval()
     for i, sub_text in enumerate(sub_texts):