class_docstr: Cross-covariance loss.
code: def check_type_forward(self, in_types):
      type_check._argname(in_types, ("y", "z"))
      y_type, z_type = in_types
  
      type_check.expect(
          y_type.dtype.kind == "f",
          y_type.dtype == z_type.dtype,
          y_type.ndim == 2,
          z_type.ndim == 2,
          y_type.shape[0] == z_type.shape[0],
      )
  
file_path: chainer/chainer/functions/loss/cross_covariance.py
imports: import chainer
  from chainer import backend
  from chainer import function_node
  from chainer import utils
  from chainer.utils import type_check
label_desc: Use image node_id 2 for calling the CrossCovariance obj's underlying member method code with example usage: obj.check_type_forward(in_types) without return types