How to freeze backbone and unfreeze it after a specific epoch?

[Mr-ind1fferent]

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Question

How to freeze backbone and unfreeze it after a specific epoch?Now i can only freeze backbone all the training time.

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[github-actions]

👋 Hello @Mr-ind1fferent, thank you for your interest in YOLOv5 🚀! Please visit our ⭐️ Tutorials to get started, where you can find quickstart guides for simple tasks like Custom Data Training all the way to advanced concepts like Hyperparameter Evolution.

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[glenn-jocher]

@Mr-ind1fferent see Transfer Learning with Frozen Layers tutorial below:

Tutorials

• Train Custom Data  🚀 RECOMMENDED
• Tips for Best Training Results  ☘️ RECOMMENDED
• Multi-GPU Training
• PyTorch Hub 🌟 NEW
• TFLite, ONNX, CoreML, TensorRT Export 🚀
• Test-Time Augmentation (TTA)
• Model Ensembling
• Model Pruning/Sparsity
• Hyperparameter Evolution
• Transfer Learning with Frozen Layers
• Architecture Summary 🌟 NEW
• Weights & Biases Logging
• Roboflow for Datasets, Labeling, and Active Learning  🌟 NEW
• ClearML Logging 🌟 NEW
• Deci Platform 🌟 NEW
• Comet Logging 🌟 NEW

Good luck 🍀 and let us know if you have any other questions!

[github-actions]

👋 Hello, this issue has been automatically marked as stale because it has not had recent activity. Please note it will be closed if no further activity occurs.

Access additional YOLOv5 🚀 resources:

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[Enverrrr]

Search before asking

* [x]  I have searched the YOLOv5 [issues](https://github.com/ultralytics/yolov5/issues) and [discussions](https://github.com/ultralytics/yolov5/discussions) and found no similar questions.

Question

How to freeze backbone and unfreeze it after a specific epoch?Now i can only freeze backbone all the training time.

Additional

No response

Brother could you find the solution

[Mr-ind1fferent]

Search before asking

* [x]  I have searched the YOLOv5 [issues](https://github.com/ultralytics/yolov5/issues) and [discussions](https://github.com/ultralytics/yolov5/discussions) and found no similar questions.

Question

How to freeze backbone and unfreeze it after a specific epoch?Now i can only freeze backbone all the training time.

Additional

No response

Brother could you find the solution

it can only work on manual pause on the epoch you want

[Mr-ind1fferent]

Search before asking

* [x]  I have searched the YOLOv5 [issues](https://github.com/ultralytics/yolov5/issues) and [discussions](https://github.com/ultralytics/yolov5/discussions) and found no similar questions.

Question

How to freeze backbone and unfreeze it after a specific epoch?Now i can only freeze backbone all the training time.

Additional

No response

Brother could you find the solution

Just adjust the path

[glenn-jocher]

@Mr-ind1fferent Thanks for the tip! We can dynamically freeze and unfreeze layers with the --freeze argument and the freeze attribute in the YAML file. Could you clarify which path you're referring to?