Update modeling.py

modeling.py

@@ -122,7 +122,7 @@ class MARModel(PreTrainedModel):
         num_sampling_steps_diffloss = kwargs.get('num_sampling_steps', 100)
         device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
         model_type = "mar_base"
-        model_architecture = MAR.__dict__[model_type](
+        model_architecture = mar.__dict__[model_type](
             buffer_size=buffer_size,
             diffloss_d=diffloss_d,
             diffloss_w=diffloss_w,