class_docstr: Scaled Exponential Linear Unit (SELU)
      "Self-Normalizing Neural Networks", Klambauer et al, 2017
      https://arxiv.org/abs/1706.02515
  
  
  Inputs:
      - **data**: input tensor with arbitrary shape.
  
  Outputs:
      - **out**: output tensor with the same shape as `data`.
code: def __init__(self, **kwargs):
      super(SELU, self).__init__(**kwargs)
  
imports: from ...None import initializer, npx
  from ..block import HybridBlock
  from ..parameter import Parameter
  from ...util import use_np
label_desc: Use image node_id 1 to create a new SELU object from inherited base classes: HybridBlock with example: obj = SELU()