code: def compute(self):
      return self.correct.float() / self.total
  
imports: import logging
  import re
  import string
  from collections import Counter
  from typing import List, Union
  import torch
  from torchmetrics import Metric
label_desc: Use image node_id 3 for calling the ExactStringMatchMetric obj's underlying member method code with example usage: obj.compute() and returns: unknown