code: def transformer_tall_train_uniencdec():
    
    hparams = transformer_tall()
    hparams.max_input_seq_length = 750
    hparams.max_target_seq_length = 100
    hparams.optimizer = "true_adam"
    hparams.learning_rate_schedule = ("linear_warmup*constant*cosdecay")
    hparams.learning_rate_decay_steps = 150000
    hparams.learning_rate_constant = 2e-4
    hparams.unidirectional_encoder = True
    return hparams
docs: Train CNN/DM with a unidirectional encoder and decoder.