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ultralytics-ascend/docs/en/reference/utils/callbacks/base.md
Glenn Jocher 2af71d15a6
Refactor all Ultralytics Solutions (#12790) 
Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>
Co-authored-by: RizwanMunawar <chr043416@gmail.com>
2024-05-18 18:14:42 +02:00

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Explore how to use the on-train, on-validation, on-pretrain, and on-predict callbacks in Ultralytics. Learn to update params, save models, and add integration callbacks. Ultralytics, Callbacks, On-train, On-validation, On-pretrain, On-predict, Parameters update, Model saving, Integration callbacks

Reference for ultralytics/utils/callbacks/base.py

!!! Note

This file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/callbacks/base.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/callbacks/base.py). If you spot a problem please help fix it by [contributing](/help/contributing.md) a [Pull Request](https://github.com/ultralytics/ultralytics/edit/main/ultralytics/utils/callbacks/base.py) 🛠️. Thank you 🙏!



::: ultralytics.utils.callbacks.base.on_pretrain_routine_start



::: ultralytics.utils.callbacks.base.on_pretrain_routine_end



::: ultralytics.utils.callbacks.base.on_train_start



::: ultralytics.utils.callbacks.base.on_train_epoch_start



::: ultralytics.utils.callbacks.base.on_train_batch_start



::: ultralytics.utils.callbacks.base.optimizer_step



::: ultralytics.utils.callbacks.base.on_before_zero_grad



::: ultralytics.utils.callbacks.base.on_train_batch_end



::: ultralytics.utils.callbacks.base.on_train_epoch_end



::: ultralytics.utils.callbacks.base.on_fit_epoch_end



::: ultralytics.utils.callbacks.base.on_model_save



::: ultralytics.utils.callbacks.base.on_train_end



::: ultralytics.utils.callbacks.base.on_params_update



::: ultralytics.utils.callbacks.base.teardown



::: ultralytics.utils.callbacks.base.on_val_start



::: ultralytics.utils.callbacks.base.on_val_batch_start



::: ultralytics.utils.callbacks.base.on_val_batch_end



::: ultralytics.utils.callbacks.base.on_val_end



::: ultralytics.utils.callbacks.base.on_predict_start



::: ultralytics.utils.callbacks.base.on_predict_batch_start



::: ultralytics.utils.callbacks.base.on_predict_batch_end



::: ultralytics.utils.callbacks.base.on_predict_postprocess_end



::: ultralytics.utils.callbacks.base.on_predict_end



::: ultralytics.utils.callbacks.base.on_export_start



::: ultralytics.utils.callbacks.base.on_export_end



::: ultralytics.utils.callbacks.base.get_default_callbacks



::: ultralytics.utils.callbacks.base.add_integration_callbacks