docstr: :param arch_id: 
  :param dataset: 
  :param epoch_num: which epoch's performance to return
  :param total_epoch: 
docstr_tok: [":","param","arch_id",":",":","param","dataset",":",":","param","epoch_num",":","which","epoch","'s","performance","to","return",":","param","total_epoch",":"]
code: def get_ground_truth(
      self,
      arch_id: str,
      dataset: str,
      epoch_num: int = None,
      total_epoch: int = 200,
  ):
      """
      :param arch_id:
      :param dataset:
      :param epoch_num: which epoch's performance to return
      :param total_epoch:
      """
      if self.space_name == Config.NB101:
          self.api = Gt101()
          acc, time_usage = self.api.get_c10_test_info(
              arch_id, dataset, epoch_num
          )
          return acc, time_usage
  
      elif self.space_name == Config.NB201:
          self.api = Gt201()
          if total_epoch == 200:
              acc, time_usage = self.api.query_200_epoch(
                  arch_id, dataset, epoch_num
              )
          else:  # 12
              acc, time_usage = self.api.query_12_epoch(
                  arch_id, dataset, epoch_num
              )
          return acc, time_usage
  
      elif self.space_name == Config.MLPSP:
          self.api = GTMLP(dataset)
          acc, time_usage = self.api.get_valid_auc(arch_id, epoch_num)
          return acc, time_usage
  
      else:
          raise NotImplementedError
  
file_path: singa/examples/model_selection/TRAILS-Database-Native-Model-Selection/internal/ml/model_selection/src/query_api/interface.py
imports: from src.common.constant import Config, CommonVars
  from src.query_api.query_api_img import Gt201, Gt101
  from src.query_api.query_api_mlp import GTMLP
  from src.query_api.query_api_img import ImgScoreQueryApi
  from typing import *
label_desc: Use image node_id 2 for calling the SimulateTrain obj's underlying member method code with example usage: obj.get_ground_truth(arch_id, dataset, epoch_num, total_epoch) and returns: acc,  time_usage, acc,  time_usage, acc,  time_usage