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

Building a transformer model for language modeling

In this section, we will explore what transformers are and build one using PyTorch for the task of language modeling. We will also learn how to use some of its successors, such as BERT and GPT, via PyTorch's pretrained model repository. Before we start building a transformer model, let's quickly recap what language modeling is.

Reviewing language modeling

Language modeling is the task of figuring out the probability of the occurrence of a word or a sequence of words that should follow a given sequence of words. For example, if we are given French is a beautiful _____ as our sequence of words, what is the probability that the next word will be language or word, and so on? These probabilities are computed by modeling the language using various probabilistic and statistical techniques. The idea is to observe a text corpus and learn the grammar by learning which words occur together and which words never occur together...