code: def BaulieuX_calc(TP, FP, FN, TN):
      """
      Calculate Baulieu X.
  
      :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 X as float
      """
      try:
          n = TP + FP + FN + TN
          max_bc = max(FP, FN)
          return (FP + FN + max_bc) / (n + max_bc)
      except Exception:
          return "None"
  
imports: from __future__ import division
  from enum import Enum
  import math
label_desc: Use image node_id 16 for calling a global function with example usage: BaulieuX_calc(TP, FP, FN, TN) and returns: unknown, str