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roytseng-tw / Detectron.pytorch

A pytorch implementation of Detectron. Both training from scratch and inferring directly from pretrained Detectron weights are available.

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Why freeze all bn (affine) layers?

lilichu opened this issue · comments

commented
Why freeze all bn (affine) layers?
commented

Detectron.pytorch/lib/modeling/ResNet.py

Line 76 in 8315af3

# Freeze all bn (affine) layers !!! 

    def _init_modules(self):
        # Freeze all bn (affine) layers !!!
        self.apply(lambda m: freeze_params(m) if isinstance(m, mynn.AffineChannel2d) else None)