| --- |
| description: Browse through Ultralytics YOLO docs to learn about important logging and callback functions used in training and pretraining models. |
| keywords: Ultralytics, YOLO, callbacks, logger, training, pretraining, machine learning, models |
| --- |
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| # Reference for `ultralytics/utils/callbacks/dvc.py` |
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| !!! Note |
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| This file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/callbacks/dvc.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/callbacks/dvc.py). If you spot a problem please help fix it by [contributing](https://docs.ultralytics.com/help/contributing/) a [Pull Request](https://github.com/ultralytics/ultralytics/edit/main/ultralytics/utils/callbacks/dvc.py) 🛠️. Thank you 🙏! |
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| <br><br> |
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| ## ::: ultralytics.utils.callbacks.dvc._log_images |
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| <br><br> |
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| ## ::: ultralytics.utils.callbacks.dvc._log_plots |
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| <br><br> |
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| ## ::: ultralytics.utils.callbacks.dvc._log_confusion_matrix |
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| <br><br> |
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| ## ::: ultralytics.utils.callbacks.dvc.on_pretrain_routine_start |
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| <br><br> |
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| ## ::: ultralytics.utils.callbacks.dvc.on_pretrain_routine_end |
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| <br><br> |
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| ## ::: ultralytics.utils.callbacks.dvc.on_train_start |
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| <br><br> |
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| ## ::: ultralytics.utils.callbacks.dvc.on_train_epoch_start |
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| <br><br> |
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| ## ::: ultralytics.utils.callbacks.dvc.on_fit_epoch_end |
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| <br><br> |
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| ## ::: ultralytics.utils.callbacks.dvc.on_train_end |
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| <br><br> |
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