---
title: "Discussion on \"🚗 Understanding PyTorch Training & Testing Loops Through a Car Metaphor\" | Hashnode"
description: "Discussion on \"🚗 Understanding PyTorch Training & Testing Loops Through a Car Metaphor\". A beginner-friendly yet deep dive into forward pass, loss, backpropagation, and optimization—explained through a real-world analogy."
url: "https://hashnode.com/posts/understanding-pytorch-training-testing-loops-through-a-car-metaphor/69e98f048991b5ba157ed319"
---

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# [🚗 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.

Apr 23 · 4 min read · arsalanshahyar.hashnode.dev  
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## Written by

[Arsalan Shahyar](https://hashnode.com/@arsalanshahyar)

@arsalanshahyar · Kabul, Afghanistan

  
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Breaking down machine learning into simple ideas

I’m a computer science student and machine learning engineer passionate about AI, data, and problem-solving. I enjoy breaking down complex concepts into simple, practical ideas and sharing what I learn through writing, projects, and teaching.

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