class_docstr: Base class inheritted by all text data classes.
      
docstr: Returns a dictionary of default hyperparameters.
  
  See the specific subclasses for the details.
docstr_tok: ["Returns","a","dictionary","of","default","hyperparameters",".","See","the","specific","subclasses","for","the","details","."]
code: def default_hparams():
      """Returns a dictionary of default hyperparameters.
  
      See the specific subclasses for the details.
      """
      hparams = DataBase.default_hparams()
      hparams.update(
          {
              "bucket_boundaries": [],
              "bucket_batch_sizes": None,
              "bucket_length_fn": None,
          }
      )
      return hparams
  
imports: import tensorflow
  from texar.tf.data.data.data_base import DataBase
  from texar.tf.data.data import dataset_utils
label_desc: Use image node_id 2 for calling the TextDataBase obj's underlying member method code with example usage: obj.default_hparams() and returns: hparams