Book Image

Hands-On Natural Language Processing with PyTorch 1.x

By : Thomas Dop
Book Image

Hands-On Natural Language Processing with PyTorch 1.x

By: Thomas Dop

Overview of this book

In the internet age, where an increasing volume of text data is generated daily from social media and other platforms, being able to make sense of that data is a crucial skill. With this book, you’ll learn how to extract valuable insights from text by building deep learning models for natural language processing (NLP) tasks. Starting by understanding how to install PyTorch and using CUDA to accelerate the processing speed, you’ll explore how the NLP architecture works with the help of practical examples. This PyTorch NLP book will guide you through core concepts such as word embeddings, CBOW, and tokenization in PyTorch. You’ll then learn techniques for processing textual data and see how deep learning can be used for NLP tasks. The book demonstrates how to implement deep learning and neural network architectures to build models that will allow you to classify and translate text and perform sentiment analysis. Finally, you’ll learn how to build advanced NLP models, such as conversational chatbots. By the end of this book, you’ll not only have understood the different NLP problems that can be solved using deep learning with PyTorch, but also be able to build models to solve them.
Table of Contents (14 chapters)
1
Section 1: Essentials of PyTorch 1.x for NLP
7
Section 3: Real-World NLP Applications Using PyTorch 1.x

Building a CNN for text classification

Now that we know the basics of CNNs, we can begin to build one from scratch. In the previous chapter, we built a model for sentiment prediction, where sentiment was a binary classifier; 1 for positive and 0 for negative. However, in this example, we will aim to build a CNN for multi-class text classification. In a multi-class problem, a particular example can only be classified as one of several classes. If an example can be classified as many different classes, then this is multi-label classification. Since our model is multi-class, this means that our model will aim at predicting which one of several classes our input sentence is classified as. While this problem is considerably more difficult than our binary classification task (as our sentence can now belong to one of many, rather than one of two classes), we will show that CNNs can deliver good performance on this task. We will first begin by defining our data.

Defining a multi-class...