code: def default_hyper_parameters(cls) -> Dict[str, Dict[str, Any]]:
      return {
          "layer_bi_gru": {"units": 128, "return_sequences": False},
          "layer_output": {},
      }
  
file_path: Kashgari/kashgari/tasks/classification/bi_gru_model.py
imports: from typing import Dict, Any
  from tensorflow import keras
  from kashgari.layers import L
  from kashgari.tasks.classification.abc_model import ABCClassificationModel
label_desc: Use image node_id 1 for calling the BiGRU_Model obj's underlying member method code with example usage: obj.default_hyper_parameters(cls) and returns: dict