class_docstr: Callback interface with several methods that are called at different stages of the optimization process.
docstr: Called before the intensification asks for new configurations. Essentially, this callback is called
  before the surrogate model is trained and before the acquisition function is called.
docstr_tok: ["Called","before","the","intensification","asks","for","new","configurations",".","Essentially",",","this","callback","is","called","before","the","surrogate","model","is","trained","and","before","the","acquisition","function","is","called","."]
code: def on_next_configurations_start(
      self, config_selector: smac.main.config_selector.ConfigSelector
  ) -> None:
      """Called before the intensification asks for new configurations. Essentially, this callback is called
      before the surrogate model is trained and before the acquisition function is called.
      """
      pass
  
file_path: SMAC3/smac/callback/callback.py
imports: from __future__ import annotations
  from ConfigSpace import Configuration
  import smac
  from smac.runhistory import TrialInfo, TrialValue
label_desc: Use image node_id 6 for calling the Callback obj's underlying member method code with example usage: obj.on_next_configurations_start(config_selector) without return types