code: def __init__(
      self,
      model_dirname=None,
      stage_name=None,
      ensemble_num=12,
      use_cuda=False,
  ):
      self.stage_name = stage_name
      self.ensemble_num = ensemble_num
      self.actors = []
      self.critics = []
      for i in range(ensemble_num):
          self.actors.append(
              ActorModel(
                  OBS_DIM,
                  VEL_OBS_DIM,
                  ACT_DIM,
                  stage_name=stage_name,
                  model_id=i,
              )
          )
          self.critics.append(
              CriticModel(
                  OBS_DIM,
                  VEL_OBS_DIM,
                  ACT_DIM,
                  stage_name=stage_name,
                  model_id=i,
              )
          )
  
      self._define_program()
  
      self.place = fluid.CUDAPlace(0) if use_cuda else fluid.CPUPlace()
      self.fluid_executor = fluid.Executor(self.place)
      self.fluid_executor.run(self.startup_program)
  
      if model_dirname is not None:
          self._load_params(model_dirname)
  
imports: import numpy
  import parl.layers
  from mlp_model import ActorModel, CriticModel
  from paddle import fluid
  from parl.utils import logger
label_desc: Use image node_id 1 to create a new EnsembleBaseModel object from inherited base classes: object with example: obj = EnsembleBaseModel(model_dirname, stage_name, ensemble_num, use_cuda)