code: def relative_confidence(probs):
      lp = len(probs)
      return probs[lp - 1] - probs[lp - 2]
  
file_path: turicreate/src/python/turicreate/toolkits/_evaluate_utils.py
imports: from six.moves import reduce
  import math
  import turicreate
label_desc: Use image node_id 3 for calling a global function with example usage: relative_confidence(probs) and returns: unknown