code: def _proba_uncertainty(proba: np.ndarray) -> np.ndarray:
      """
      Calculates the uncertainty of the prediction probabilities.
  
      Args:
          proba: Prediction probabilities.
  
      Returns:
          Uncertainty of the prediction probabilities.
      """
  
      return 1 - np.max(proba, axis=1)
  
file_path: modAL/modAL/uncertainty.py
imports: import numpy
  from scipy.stats import entropy
  from sklearn.base import BaseEstimator
  from sklearn.exceptions import NotFittedError
  from modAL.utils.data import modALinput
  from modAL.utils.selection import multi_argmax, multi_argmin, shuffled_argmax, shuffled_argmin
label_desc: Use image node_id 1 for calling a global function with example usage: _proba_uncertainty(proba) and returns: unknown