code: def alternative_jaccard(x, y):
      num_non_zero = 0.0
      num_equal = 0.0
      dim = x.shape[0]
      for i in range(dim):
          x_true = x[i] != 0
          y_true = y[i] != 0
          num_non_zero += x_true or y_true
          num_equal += x_true and y_true
  
      if num_non_zero == 0.0:
          return 0.0
      else:
          return -np.log2(num_equal / num_non_zero)
  
imports: import numpy
  import numba
  from pynndescent.optimal_transport import allocate_graph_structures, initialize_graph_structures, initialize_supply, initialize_cost, network_simplex_core, total_cost, ProblemStatus, sinkhorn_transport_plan
label_desc: Use image node_id 13 for calling a global function with example usage: alternative_jaccard(x, y) and returns: int, unknown