code: def approximate_hamming_similarity(x, y):
      """Approximate Hamming similarity."""
      return torch.mean(torch.tanh(x) * torch.tanh(y), dim=1)
  
file_path: DIG/dig/auggraph/method/SMixup/utils/utils.py
imports: from torch_geometric.utils import degree
  import torch
label_desc: Use image node_id 2 for calling a global function with example usage: approximate_hamming_similarity(x, y) and returns: torch