code: def correct_alternative_jaccard(v):
      return 1.0 - pow(2.0, -v)
  
imports: from __future__ import print_function
  import locale
  import numpy
  import numba
  from pynndescent.utils import norm, tau_rand
  from pynndescent.distances import kantorovich, jensen_shannon_divergence, symmetric_kl_divergence
label_desc: Use image node_id 21 for calling a global function with example usage: correct_alternative_jaccard(v) and returns: unknown