---
title: "Arsalan Shahyar (@arsalanshahyar) | Hashnode"
description: "Breaking down machine learning into simple ideas. Read the latest articles by Arsalan Shahyar on Hashnode."
url: "https://hashnode.com/@arsalanshahyar"
---

@arsalanshahyar

# Arsalan Shahyar

@arsalanshahyar · Kabul, Afghanistan · Joined April 2026

Breaking down machine learning into simple ideas

[Website](https://www.arsalanshahyar.dev/)

### [🚗 Understanding PyTorch Training & Testing Loops Through a Car Metaphor](https://arsalanshahyar.hashnode.dev/understanding-pytorch-training-testing-loops-through-a-car-metaphor?utm_source=hashnode&utm_medium=feed)

A beginner-friendly yet deep dive into forward pass, loss, backpropagation, and optimization—explained through a real-world analogy.

4 min read · [arsalanshahyar.hashnode.dev](https://arsalanshahyar.hashnode.dev/understanding-pytorch-training-testing-loops-through-a-car-metaphor?utm_source=hashnode&utm_medium=feed)

[Apr 23](https://hashnode.com/posts/understanding-pytorch-training-testing-loops-through-a-car-metaphor/69e98f048991b5ba157ed319)