change loss from MSE to L1

mu_map/training/default.py

@@ -38,7 +38,8 @@ class Training:
         self.lr_scheduler = torch.optim.lr_scheduler.StepLR(
             self.optimizer, step_size=self.lr_decay_epoch, gamma=self.lr_decay_factor
         )
-        self.loss_func = torch.nn.MSELoss(reduction="mean")
+        # self.loss_func = torch.nn.MSELoss(reduction="mean")
+        self.loss_func = torch.nn.L1Loss(reduction="mean")
 
     def run(self):
         for epoch in range(1, self.epochs + 1):