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import torch
from torch import nn
class PixelNorm(nn.Module):
def __init__(self, dim=1, eps=1e-8):
super(PixelNorm, self).__init__()
self.dim = dim
self.eps = eps
def forward(self, x):
return x / torch.sqrt(torch.mean(x**2, dim=self.dim, keepdim=True) + self.eps)
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