http://programmer.ie/tags/recursive-composition/ Recent content in Recursive Composition on Programmer.ie Hugo en-us Sat, 08 Aug 2026 13:09:00 +0100 http://programmer.ie/books/pytorch-zero-to-hero/04-chapter/ Sat, 08 Aug 2026 13:09:00 +0100 http://programmer.ie/books/pytorch-zero-to-hero/04-chapter/ <h2 id="pytorch-zero-to-hero--step-04">PyTorch: Zero to Hero — Step 04</h2> <p>In the previous post we built a neural network using raw tensors and autograd.</p> <p>We had weights.</p> <p>We had biases.</p> <p>We had a forward calculation.</p> <p>We had a loss.</p> <p>We called <code>backward()</code>.</p> <p>We updated the parameters.</p> <p>Nothing essential was missing from the mathematics of training.</p> <p>Now we are going to add <code>nn.Module</code>.</p> <p>But I do not want to introduce it as another PyTorch class whose methods you need to memorize.</p>