the rescale factor
      
    
      
      
    
      
      
    
      
      
    
      
      
    
      
      
    
      For how many epochs to update the learning rate once
      
    
      
      
    
      update learning rate by config table and state table
update learning rate by config table and state table
init optiMethod.
      
    
      
      
    
      
      
    
      
      
    
      
EpochStep is a learning rate schedule, which rescale the learning rate by
gammafor eachstepSizeepochs.For how many epochs to update the learning rate once
the rescale factor