code: def BaulieuII_calc(TP, FP, FN, TN):
      """
      Calculate Baulieu II.
  
      :param TP: true positive
      :type TP: int
      :param TN: true negative
      :type TN: int
      :param FP: false positive
      :type FP: int
      :param FN: false negative
      :type FN: int
      :return: Baulieu II as float
      """
      try:
          part1 = TP * TP * TN * TN
          part2 = (TP + FP) * (TP + FN) * (FP + TN) * (FN + TN)
          return part1 / part2
      except Exception:
          return "None"
  
imports: from __future__ import division
  from enum import Enum
  import math
label_desc: Use image node_id 8 for calling a global function with example usage: BaulieuII_calc(TP, FP, FN, TN) and returns: unknown, str