# Copyright 2016 Vimal Manohar
  # Apache 2.0
  
  """ This library has classes and methods commonly used for training nnet3
  neural networks.
  
  It has separate submodules for frame-level objectives and chain objective:
  frame_level_objf -- For both recurrent and non-recurrent architectures
  chain_objf -- LF-MMI objective training
  """