Translations:Transfer Learning/11/en
| Strategy | Description | When to use |
|---|---|---|
| Feature extraction | Freeze all pretrained layers; train only a new output head | Very small target dataset; source and target are closely related |
| fine-tuning (full) | Unfreeze all layers and train end-to-end with a small learning rate | Moderate target dataset; source and target differ meaningfully |
| Gradual unfreezing | Progressively unfreeze layers from top to bottom over training | Balances stability of lower features with adaptation of higher ones |