import torch import torch.nn as nn import torch.nn.functional as F from base.base_net import BaseNet class FashionMNIST_LeNet(BaseNet): def __init__(self, rep_dim=64): super().__init__() self.rep_dim = rep_dim self.pool = nn.MaxPool2d(2, 2) self.conv1 = nn.Conv2d(1, 16, 5, bias=False, padding=2) self.bn2d1 = nn.BatchNorm2d(16, eps=1e-04, affine=False) self.conv2 = nn.Conv2d(16, 32, 5, bias=False, padding=2) self.bn2d2 = nn.BatchNorm2d(32, eps=1e-04, affine=False) self.fc1 = nn.Linear(32 * 7 * 7, 128, bias=False) self.bn1d1 = nn.BatchNorm1d(128, eps=1e-04, affine=False) self.fc2 = nn.Linear(128, self.rep_dim, bias=False) def forward(self, x): x = x.view(-1, 1, 28, 28) x = self.conv1(x) x = self.pool(F.leaky_relu(self.bn2d1(x))) x = self.conv2(x) x = self.pool(F.leaky_relu(self.bn2d2(x))) x = x.view(int(x.size(0)), -1) x = F.leaky_relu(self.bn1d1(self.fc1(x))) x = self.fc2(x) return x class FashionMNIST_LeNet_Decoder(BaseNet): def __init__(self, rep_dim=64): super().__init__() self.rep_dim = rep_dim self.fc3 = nn.Linear(self.rep_dim, 128, bias=False) self.bn1d2 = nn.BatchNorm1d(128, eps=1e-04, affine=False) self.deconv1 = nn.ConvTranspose2d(8, 32, 5, bias=False, padding=2) self.bn2d3 = nn.BatchNorm2d(32, eps=1e-04, affine=False) self.deconv2 = nn.ConvTranspose2d(32, 16, 5, bias=False, padding=3) self.bn2d4 = nn.BatchNorm2d(16, eps=1e-04, affine=False) self.deconv3 = nn.ConvTranspose2d(16, 1, 5, bias=False, padding=2) def forward(self, x): x = self.bn1d2(self.fc3(x)) x = x.view(int(x.size(0)), int(128 / 16), 4, 4) x = F.interpolate(F.leaky_relu(x), scale_factor=2) x = self.deconv1(x) x = F.interpolate(F.leaky_relu(self.bn2d3(x)), scale_factor=2) x = self.deconv2(x) x = F.interpolate(F.leaky_relu(self.bn2d4(x)), scale_factor=2) x = self.deconv3(x) x = torch.sigmoid(x) return x class FashionMNIST_LeNet_Autoencoder(BaseNet): def __init__(self, rep_dim=64): super().__init__() self.rep_dim = rep_dim self.encoder = FashionMNIST_LeNet(rep_dim=rep_dim) self.decoder = FashionMNIST_LeNet_Decoder(rep_dim=rep_dim) def forward(self, x): x = self.encoder(x) x = self.decoder(x) return x