pytorch l2 code example

Example 1: pytorch l2 regularization

# add l2 regularization to optimzer by just adding in a weight_decay 
optimizer = torch.optim.Adam(model.parameters(),lr=1e-4,weight_decay=1e-5)

Example 2: Regularization pytorch

loss = mse(pred, target)
 l1 = 0
 for p in net.parameters():
  l1 = l1 + p.abs().sum()
 loss = loss + lambda_l1 * l1
 loss.backward()
 optimizer.step()