class_docstr: Blackbox Optimiser Class. 
class_docstr_tok: ["Blackbox","Optimiser","Class","."]
docstr: Returns a string describing the progress in optimisation. 
docstr_tok: ["Returns","a","string","describing","the","progress","in","optimisation","."]
code: def _get_exd_child_report_results_str(self):
      """Returns a string describing the progress in optimisation."""
      best_val_str = "curr_max=%0.5f" % (self.curr_opt_val)
      if self.func_caller.is_mf():
          window_length = 20
          window_queries_at_f2o = self.history.query_at_fidel_to_opts[
              -window_length:
          ]
          fidel_to_opt_str = ", #f2o=%d(%d/%d)" % (
              self.num_fidel_to_opt_calls,
              sum(window_queries_at_f2o),
              window_length,
          )
      else:
          fidel_to_opt_str = ""
      opt_method_str = self._get_opt_method_report_results_str()
      return best_val_str + fidel_to_opt_str + opt_method_str + ", "
  
imports: from __future__ import division
  from argparse import Namespace
  import numpy
  from ..exd.exd_core import ExperimentDesigner, exd_core_args
  from ..utils.option_handler import load_options
label_desc: Use image node_id 11 for calling the BlackboxOptimiser obj's underlying member method code with example usage: obj._get_exd_child_report_results_str() and returns: unknown