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Updated Swish function to enable model export #242

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Updated Swish function to enable model export #242

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6 changes: 6 additions & 0 deletions pytorchvideo/layers/swish.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,12 @@ class Swish(nn.Module):
"""

def forward(self, x):
if not self.training:
"""
SwishFunction is not traceable by torchscript due to use of torch.autograd
Apply model.eval() before tracing using torch.jit.trace
"""
return x * torch.sigmoid(x)
return SwishFunction.apply(x)


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