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44 lines
1004 B
44 lines
1004 B
---
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description: Explore the detailed information on key Ultralytics callbacks such as on_pretrain_routine_end, on_model_save, on_train_start, and on_predict_start.
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keywords: Ultralytics, callbacks, on_pretrain_routine_end, on_model_save, on_train_start, on_predict_start, hub, training
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---
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## on_pretrain_routine_end
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---
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### ::: ultralytics.utils.callbacks.hub.on_pretrain_routine_end
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<br><br>
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## on_fit_epoch_end
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---
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### ::: ultralytics.utils.callbacks.hub.on_fit_epoch_end
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<br><br>
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## on_model_save
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---
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### ::: ultralytics.utils.callbacks.hub.on_model_save
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<br><br>
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## on_train_end
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---
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### ::: ultralytics.utils.callbacks.hub.on_train_end
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<br><br>
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## on_train_start
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---
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### ::: ultralytics.utils.callbacks.hub.on_train_start
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<br><br>
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## on_val_start
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---
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### ::: ultralytics.utils.callbacks.hub.on_val_start
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<br><br>
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## on_predict_start
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---
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### ::: ultralytics.utils.callbacks.hub.on_predict_start
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<br><br>
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## on_export_start
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---
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### ::: ultralytics.utils.callbacks.hub.on_export_start
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<br><br> |