Callback that prints metrics to stdout.
callback_progbar_logger(count_mode = "samples")One of "steps" or "samples". Whether the progress bar should count samples seens or steps (batches) seen.
Other callbacks: callback_csv_logger,
callback_early_stopping,
callback_lambda,
callback_learning_rate_scheduler,
callback_model_checkpoint,
callback_reduce_lr_on_plateau,
callback_remote_monitor,
callback_tensorboard,
callback_terminate_on_naan