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freeCodeCamp

Building a Vision Transformer Model from Scratch with PyTorch

via freeCodeCamp

Overview

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This hands-on tutorial guides you through building a Vision Transformer (ViT) from scratch using PyTorch over the course of 2 hours. Master each component of the architecture, starting with theoretical explanations of Vision Transformers before diving into practical implementation. Set up your environment, configure hyperparameters, and learn to process images through transformation operations. Download the CIFAR-10 dataset and create appropriate DataLoaders before constructing the complete Vision Transformer model piece by piece. Define loss functions and optimizers, implement a comprehensive training loop, and visualize the accuracy differences between training and testing. Make predictions with your trained model and learn to fine-tune it using data augmentation techniques. The tutorial includes access to complete source code on GitHub and follows a structured approach with clearly defined sections covering everything from basic concepts to advanced model optimization for image classification tasks.

Syllabus

⌨️ 0:00:00 Intro
⌨️ 0:28:23 Theoretical Explanation of Vision Transformers
⌨️ 0:47:40 Environment Setup and Library Imports
⌨️ 0:55:14 Configurations and Hyperparameter Setup
⌨️ 0:58:28 Image Transformation Operations
⌨️ 1:00:28 Downloading the CIFAR-10 Dataset
⌨️ 1:04:22 Creating DataLoaders
⌨️ 1:11:32 Building the Vision Transformer ViT Model
⌨️ 1:43:41 Defining Loss Function and Optimizer
⌨️ 1:45:37 Training Loop and Model Training
⌨️ 2:03:18 Visualizing Accuracy Training vs Testing
⌨️ 2:06:08 Making and Visualizing Predictions
⌨️ 2:18:48 Fine-Tuning with Data Augmentation
⌨️ 2:25:08 Training the Fine-Tuned Model
⌨️ 2:27:08 Visualizing Fine-Tuned Accuracy
⌨️ 2:28:38 Predictions After Fine-Tuning

Taught by

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