message: DOC: explain difference between adamax and adam
diff: @@ -31,7 +31,8 @@ from tensorflow.python.training import training_ops
  class AdaMaxOptimizer(adam.AdamOptimizer):
  """Optimizer that implements the AdaMax algorithm.
  - See [Kingma et al., 2014](http://arxiv.org/abs/1412.6980)
  + Adamax is sometimes superior to adam, specially in models with embeddings,
  + see [Kingma et al., 2014](http://arxiv.org/abs/1412.6980)
  ([pdf](http://arxiv.org/pdf/1412.6980.pdf)).
  """
  