class_docstr: Cross-channel normalization function used in AlexNet.
code: def check_type_forward(self, in_types):
      type_check.expect(in_types.size() == 1)
      (x_type,) = in_types
  
      type_check.expect(
          x_type.dtype.kind == "f",
          x_type.ndim >= 2,
      )
  
imports: import numpy
  import six
  from chainer.backends import cuda
  from chainer.backends import intel64
  from chainer import function_node
  from chainer.utils import type_check
label_desc: Use image node_id 2 for calling the LocalResponseNormalization obj's underlying member method code with example usage: obj.check_type_forward(in_types) without return types