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[Docs] How to unfreeze the backbone network #7570

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merged 5 commits into from
Apr 6, 2022
Merged

[Docs] How to unfreeze the backbone network #7570

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5702674
how to unfreeze the backbone network
Czm369 Mar 29, 2022
be8b1dd
custom_hooks should be a list
Czm369 Mar 29, 2022
b535a01
pre-commit code
Czm369 Mar 30, 2022
6f623cb
Merge branch 'dev' of github.com:open-mmlab/mmdetection into how_to_u…
Czm369 Apr 5, 2022
a79f3e9
only valid for resnet
Czm369 Apr 5, 2022
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pre-commit code
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@Czm369
Czm369 committed Mar 30, 2022
commit b535a01453598388aa024e3eaffe2617a1139fdf
6 changes: 3 additions & 3 deletions docs/en/tutorials/how_to.md
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Expand Up @@ -136,15 +136,17 @@ Meanwhile write the hook class `UnfreezeBackboneEpochBasedHook` in `mmdet/core/h
from mmcv.parallel import is_module_wrapper
from mmcv.runner.hooks import HOOKS, Hook


@HOOKS.register_module()
class UnfreezeBackboneEpochBasedHook(Hook):
"""Unfreeze backbone network Hook.

Args:
unfreeze_epoch (int): The epoch unfreezing the backbone network.
"""

def __init__(self, unfreeze_epoch=1):
self.unfreeze_epoch=unfreeze_epoch
self.unfreeze_epoch = unfreeze_epoch

def before_train_epoch(self, runner):
# Unfreeze the backbone network.
Expand All @@ -169,6 +171,4 @@ class UnfreezeBackboneEpochBasedHook(Hook):
m.train()
for param in m.parameters():
param.requires_grad = True


```