class_docstr: Helper class to compute the top_1 and top_5 accuracies
code: def top_1(self):
      return self.correct_top_1 * 100.0 / self.total
  
imports: import logging
  from typing import List, NamedTuple
  import numpy
  import torch
  from torch import nn
  from vissl.config import AttrDict
  from vissl.hooks import default_hook_generator
  from vissl.models.model_helpers import get_trunk_output_feature_names
  from vissl.utils.checkpoint import get_checkpoint_folder
  from vissl.utils.distributed_launcher import create_submitit_executor, launch_distributed
  from vissl.utils.env import set_env_vars
  from vissl.utils.extract_features_utils import ExtractedFeaturesLoader
  from vissl.utils.hydra_config import print_cfg
  from vissl.utils.io import save_file
  from vissl.utils.logger import setup_logging, shutdown_logging
label_desc: Use image node_id 3 for calling the Accuracies obj's underlying member method code with example usage: obj.top_1() and returns: unknown