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

Chapter 13: PyTorch and Explainable AI

Throughout this book, we have built several deep learning models that can perform different kinds of tasks for us. For example, a handwritten digit classifier, an image-caption generator, a sentiment classifier, and more. Although we have mastered how to train and evaluate these models using PyTorch, we do not know what precisely is happening inside these models while they make predictions. Model interpretability or explainability is that field of machine learning where we aim to answer the question, why did the model make that prediction? More elaborately, what did the model see in the input data to make that particular prediction?

In this chapter, we will use the handwritten digit classification model from Chapter 1, Overview of Deep Learning Using PyTorch, to understand its inner workings and thereby explain why the model makes a certain prediction for a given input. We will first dissect the model using only PyTorch code. Then, we will...