https://therahulbhati.github.io/tags/pytorch/ Recent content in PyTorch on Rahul Bhati Hugo -- 0.151.0 en-us Wed, 01 Jul 2026 21:00:00 +0530 https://therahulbhati.github.io/posts/nn-from-scratch/ Wed, 01 Jul 2026 21:00:00 +0530 https://therahulbhati.github.io/posts/nn-from-scratch/ <p>A neural network is a chain of functions. Each layer takes a tensor in, does one simple mathematical operation, and passes a tensor out. There&rsquo;s no magic in it. It&rsquo;s linear algebra, a nonlinearity, and calculus, repeated.</p> <p>Here&rsquo;s the chain in the order data actually flows through it: forward pass first, then how it learns. Every equation gets paired with its exact PyTorch equivalent, so you can see where the math actually lives in code.</p>