class_docstr: Optimizer that implements the YellowFin algorithm.
  
  Implemented as a wrapper around tf.train.MomentumOptimizer
class_docstr_tok: ["Optimizer","that","implements","the","YellowFin","algorithm",".","Implemented","as","a","wrapper","around","tf.train.MomentumOptimizer"]
code: def get_lr_tensor(self):
      lr = (1.0 - tf.sqrt(self._mu)) ** 2 / (self._h_min + EPS)
      lr = tf.minimum(
          lr,
          lr
          * (tf.to_float(self._global_step) + 1.0)
          / 10.0
          / tf.to_float(tf.constant(self._curv_win_width)),
      )
      return lr
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  import delta.compat
  from tensorflow.python.framework import ops
label_desc: Use image node_id 7 for calling the YFOptimizer obj's underlying member method code with example usage: obj.get_lr_tensor() and returns: lr