code: def __init__(self, **kwargs):
      super(SmoothMSELoss, self).__init__()
      self.smooth_win = kwargs["smooth_win"]
  
imports: import os
  import paddle
  import paddle.nn
  import paddle.nn.functional
  import numpy
label_desc: Use image node_id 1 to create a new SmoothMSELoss object from inherited base classes: nn with example: obj = SmoothMSELoss()