Book Image

Mastering PyTorch

By : Ashish Ranjan Jha
Book Image

Mastering PyTorch

By: Ashish Ranjan Jha

Overview of this book

Deep learning is driving the AI revolution, and PyTorch is making it easier than ever before for anyone to build deep learning applications. This PyTorch book will help you uncover expert techniques to get the most out of your data and build complex neural network models. The book starts with a quick overview of PyTorch and explores using convolutional neural network (CNN) architectures for image classification. You'll then work with recurrent neural network (RNN) architectures and transformers for sentiment analysis. As you advance, you'll apply deep learning across different domains, such as music, text, and image generation using generative models and explore the world of generative adversarial networks (GANs). You'll not only build and train your own deep reinforcement learning models in PyTorch but also deploy PyTorch models to production using expert tips and techniques. Finally, you'll get to grips with training large models efficiently in a distributed manner, searching neural architectures effectively with AutoML, and rapidly prototyping models using PyTorch and fast.ai. By the end of this PyTorch book, you'll be able to perform complex deep learning tasks using PyTorch to build smart artificial intelligence models.
Table of Contents (20 chapters)
1
Section 1: PyTorch Overview
4
Section 2: Working with Advanced Neural Network Architectures
8
Section 3: Generative Models and Deep Reinforcement Learning
13
Section 4: PyTorch in Production Systems

Training models on any hardware using PyTorch Lightning

PyTorch Lightning (https://github.com/PyTorchLightning/pytorch-lightning) is yet another library that is built on top of PyTorch to abstract out the boilerplate code needed for model training and evaluation. A special feature of this library is that any model training code written using PyTorch Lightning can be run without changes on any hardware configuration such as multiple CPUs, multiple GPUs, or even multiple TPUs.

In the following exercise, we will train and evaluate a handwritten digit classification model using PyTorch Lightning on CPUs. You can use the same code for training on GPUs or TPUs. The full code for the following exercise can be found here: https://github.com/PacktPublishing/Mastering-PyTorch/blob/master/Chapter14/pytorch_lightning.ipynb.

Defining the model components in PyTorch Lightning

In this part of the exercise, we will demonstrate how to initialize the model class in PyTorch Lightning. This...