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Fixed Sigmoid inverse log det calculation #3

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Fixed Sigmoid inverse log det calculation #3

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5 changes: 1 addition & 4 deletions synthpop/generative.py
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Original file line number Diff line number Diff line change
Expand Up @@ -61,10 +61,7 @@ def inverse(self, z):
log1mz = torch.log(self.max_values - z)
z = logz - log1mz
sum_dims = list(range(1, z.dim()))
log_det = (
- torch.sum(logz, dim=sum_dims)
- torch.sum(log1mz, dim=sum_dims)
)
log_det = (1./logz.exp() + 1./log1mz.exp()).log().sum(dim=sum_dims)
return z, log_det

def forward(self, z):
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