class_docstr: A class to normalize data.
class_docstr_tok: ["A","class","to","normalize","data","."]
docstr: Computes normalizer.
docstr_tok: ["Computes","normalizer","."]
code: def compute(self, data_np):
      """Computes normalizer."""
      raise NotImplementedError
  
imports: import io
  import os
  from absl import logging
  import numpy
  import tensorflow.compat.v1
label_desc: Use image node_id 3 for calling the DataNormalizer obj's underlying member method code with example usage: obj.compute(data_np) without return types