docs: def inception_v3_parameters(weight_decay=0.00004, stddev=0.1,
                              batch_norm_decay=0.9997, batch_norm_epsilon=0.001):
    """Yields the scope with the default parameters for inception_v3.
  
    Args:
      weight_decay: the weight decay for weights variables.
      stddev: standard deviation of the truncated guassian weight distribution.
      batch_norm_decay: decay for the moving average of batch_norm momentums.
      batch_norm_epsilon: small float added to variance to avoid dividing by zero.
  
    Yields:
      a arg_scope with the parameters needed for inception_v3.
    """
    # Set weight_decay for weights in Conv and FC layers.
    with scopes.arg_scope([ops.conv2d, ops.fc],
                          weight_decay=weight_decay):
      # Set stddev, activation and parameters for batch_norm.
      with scopes.arg_scope([ops.conv2d],
                            stddev=stddev,
                            activation=tf.nn.relu,
                            batch_norm_params={
                                'decay': batch_norm_decay,
                                'epsilon': batch_norm_epsilon}) as arg_scope:
        yield arg_scope