code: def __init__(self):
      self.TP = 0
      self.TN = 0
      self.FP = 0
      self.FN = 0
  
imports: import numpy
  from absl import logging
  import delta.compat
  from delta import utils
  from delta.utils.register import registers
  from delta.utils.register import import_all_modules_for_register
  from delta.serving.base_frozen_model import Evaluater
label_desc: Use image node_id 1 to create a new ClsMetric object  with example: obj = ClsMetric()