class_docstr: refer: https://github.com/xuebinqin/DIS/blob/main/IS-Net/basics.py
class_docstr_tok: ["refer",":","https",":","\/\/github.com\/xuebinqin\/DIS\/blob\/main\/IS-Net\/basics.py"]
code: def __str__(self):
      max_f1 = self.compute()
      return f"maxF1: {max_f1:.3f}"
  
imports: from collections import defaultdict, deque
  import datetime
  import time
  import torch
  import torch.distributed
  import torch.nn.functional
  import errno
  import os
label_desc: Use image node_id 5 for calling the F1Score obj's underlying member method code with example usage: obj.__str__() and returns: str, max_f1