diff --git a/qlib/contrib/model/pytorch_gats.py b/qlib/contrib/model/pytorch_gats.py
index fad52e834..aa5b22119 100755
--- a/qlib/contrib/model/pytorch_gats.py
+++ b/qlib/contrib/model/pytorch_gats.py
@@ -117,11 +117,7 @@ class GAT(Model):
                 seed,
             )
         )
-
-        if loss not in {"mse", "binary"}:
-            raise NotImplementedError("loss {} is not supported!".format(loss))
-        self._scorer = mean_squared_error if loss == "mse" else roc_auc_score
-
+        
         self.GAT_model = GATModel(
             d_feat=self.d_feat,
             hidden_size=self.hidden_size,
@@ -211,7 +207,6 @@ class GAT(Model):
         losses = []
 
         indices = np.arange(len(x_values))
-        np.random.shuffle(indices)
 
         for i in range(len(indices))[:: self.batch_size]: