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Python Natural Language Processing Cookbook

You're reading from   Python Natural Language Processing Cookbook Over 50 recipes to understand, analyze, and generate text for implementing language processing tasks

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Product type Paperback
Published in Mar 2021
Publisher Packt
ISBN-13 9781838987312
Length 284 pages
Edition 1st Edition
Languages
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Author (1):
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Zhenya Antić Zhenya Antić
Author Profile Icon Zhenya Antić
Zhenya Antić
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Toc

Table of Contents (10) Chapters Close

Preface 1. Chapter 1: Learning NLP Basics 2. Chapter 2: Playing with Grammar FREE CHAPTER 3. Chapter 3: Representing Text – Capturing Semantics 4. Chapter 4: Classifying Texts 5. Chapter 5: Getting Started with Information Extraction 6. Chapter 6: Topic Modeling 7. Chapter 7: Building Chatbots 8. Chapter 8: Visualizing Text Data 9. Other Books You May Enjoy

Chapter 3: Representing Text – Capturing Semantics

Representing the meaning of words, phrases, and sentences in a form that's understandable to computers is one of the pillars of NLP processing. Machine learning, for example, represents each data point as a fixed-size vector, and we are faced with the question of how to turn words and sentences into vectors. Almost any NLP task starts with representing the text in some numeric form, and this chapter will show several ways of doing that. Once you've learned how to represent text as vectors, you will be able to perform tasks such as classification, which will be described in later chapters.

We will also learn how to turn phrases such as fried chicken into vectors, how to train a word2vec model, and how to create a small search engine with semantic search.

The following recipes will be covered in this chapter:

  • Putting documents into a bag of words
  • Constructing the N-gram model
  • Representing texts...
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