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

Chapter 3: NLP and Text Embeddings

There are many different ways of representing text in deep learning. While we have covered basic bag-of-words (BoW) representations, unsurprisingly, there is a far more sophisticated way of representing text data known as embeddings. While a BoW vector acts only as a count of words within a sentence, embeddings help to numerically define the actual meaning of certain words.

In this chapter, we will explore text embeddings and learn how to create embeddings using a continuous BoW model. We will then move on to discuss n-grams and how they can be used within models. We will also cover various ways in which tagging, chunking, and tokenization can be used to split up NLP into its various constituent parts. Finally, we will look at TF-IDF language models and how they can be useful in weighting our models toward infrequently occurring words.

The following topics will be covered in the chapter:

  • Word embeddings
  • Exploring CBOW
  • Exploring...