code: def categorical_crossentropy(y_true, y_pred):
      return model_ops.categorical_crossentropy(y_pred, y_true)
  
file_path: deepchem/contrib/nn/objectives.py
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import unicode_literals
  from __future__ import absolute_import
  import warnings
  import tensorflow
  from deepchem.nn import model_ops
label_desc: Use image node_id 7 for calling a global function with example usage: categorical_crossentropy(y_true, y_pred) and returns: model_ops