---
description: Learn how to monitor the training process with Tensorboard using Ultralytics YOLO's "_log_scalars" and "on_batch_end" methods.
---

# _log_scalars
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:::ultralytics.yolo.utils.callbacks.tensorboard._log_scalars
<br><br>

# on_pretrain_routine_start
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:::ultralytics.yolo.utils.callbacks.tensorboard.on_pretrain_routine_start
<br><br>

# on_batch_end
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:::ultralytics.yolo.utils.callbacks.tensorboard.on_batch_end
<br><br>

# on_fit_epoch_end
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:::ultralytics.yolo.utils.callbacks.tensorboard.on_fit_epoch_end
<br><br>