code: def default_helper_infer_hparams():
      """Returns default hyperparameters of an RNN decoder helper in the inference
      phase.
  
      See also :meth:`~texar.tf.modules.decoders.rnn_decoder_helpers.get_helper`
      for information of the hyperparameters.
  
      Returns:
          dict: A dictionary with following structure and values:
  
          .. code-block:: python
  
              {
                  # The `helper_type` argument for `get_helper`, i.e., the name
                  # or full path to the helper class.
                  "type": "SampleEmbeddingHelper",
  
                  # The `**kwargs` argument for `get_helper`, i.e., additional
                  # keyword arguments for constructing the helper.
                  "kwargs": {}
              }
      """
      return {"type": "SampleEmbeddingHelper", "kwargs": {}}
  
imports: import tensorflow
  from tensorflow.python.ops import array_ops
  from tensorflow_probability import distributions
  from texar.tf.modules.decoders.tf_helpers import Helper, TrainingHelper, GreedyEmbeddingHelper
  from texar.tf.modules.embedders.embedder_utils import soft_embedding_lookup
  from texar.tf.utils import utils
label_desc: Use image node_id 2 for calling a global function with example usage: default_helper_infer_hparams() and returns: dict