StandardScalerModel (Transformer)
<standard_scalaer_999> 
 (Parameters -- Column Names)
  input_col: features
  output_col: scaledFeatures
 (Transformer Info)
  mean:  num [1:692] 0 0 0 0 0 0 0 0 0 0 ... 
  std:  num [1:692] 0 0 0 0 0 0 0 0 0 0 ... 
