About the training of the VQ-VAE.

[LsFlyt]

In VQ-Font/model/VQ-VAE.ipynb.

for i in xrange(num_training_updates):
data = next(iter(train_loader))
train_data_variance = torch.var(data)
# print(train_data_variance)
# show(make_grid(data.cpu().data) )
# break
data = data - 0.5 # normalize to [-0.5, 0.5]
data = data.to(device)
optimizer.zero_grad()

The code normalize data to [-0.5, 0.5]. However, the last layer of the decoder of the VQ-VAE model is sigmoid. Is this a mistake?

[LsFlyt]

And another question, in VQ-VAE, the data are normalized to [-0.5, 0.5], but in the training phase 2, the content image (which feeds to the content encoder) is normalized [-1, 1].

[awei669]

Sorry for the late reply, i can not remember the reason i use 'data = data - 0.5 # normalize to [-0.5, 0.5]' due to the long time. Maybe is a mistake or not.