--- description: Learn how to monitor the training process with Tensorboard using Ultralytics YOLO's "_log_scalars" and "on_batch_end" methods. keywords: TensorBoard callbacks, YOLO training, ultralytics YOLO --- ## _log_scalars --- ### ::: ultralytics.yolo.utils.callbacks.tensorboard._log_scalars <br><br> ## on_pretrain_routine_start --- ### ::: ultralytics.yolo.utils.callbacks.tensorboard.on_pretrain_routine_start <br><br> ## on_batch_end --- ### ::: ultralytics.yolo.utils.callbacks.tensorboard.on_batch_end <br><br> ## on_fit_epoch_end --- ### ::: ultralytics.yolo.utils.callbacks.tensorboard.on_fit_epoch_end <br><br>