pytorch 修改预训练model实例

 class Net(nn.Module):
  def __init__(self , model):
   super(Net, self).__init__()
   #取掉model的后两层
   self.resnet_layer = nn.Sequential(*list(model.children())[:-2])
   self.transion_layer = nn.ConvTranspose2d(2048, 2048, kernel_size=14, stride=3)
   self.pool_layer = nn.MaxPool2d(32) 
   self.Linear_layer = nn.Linear(2048, 8)
   
  def forward(self, x):
   x = self.resnet_layer(x)
   x = self.transion_layer(x)
   x = self.pool_layer(x)
   x = x.view(x.size(0), -1) 
   x = self.Linear_layer(x) 
   return x

resnet = models.resnet50(pretrained=True)
model = Net(resnet)