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

Summary

RL is one of the fundamental branches of machine learning and is currently one of the hottest, if not the hottest, areas of research and development. RL-based AI breakthroughs such as AlphaGo from Google's DeepMind have further increased enthusiasm and interest in the field. This chapter provided an overview of RL and DRL and walked us through a hands-on exercise of building a DQN model using PyTorch.

First, we briefly review the basic concepts of RL. We then explored the different kinds of RL algorithms that have been developed over the years. We took a closer look at one such RL algorithm – the Q-learning algorithm. We then discussed the theory behind Q-learning, including the Bellman equation and the epsilon-greedy-action mechanism. We also explained how Q-learning differs from other RL algorithms, such as policy optimization methods.

Next, we explored a specific type of Q-learning model – the deep Q-learning model. We discussed the key concepts...