Book Image

Python Natural Language Processing

Book Image

Python Natural Language Processing

Overview of this book

This book starts off by laying the foundation for Natural Language Processing and why Python is one of the best options to build an NLP-based expert system with advantages such as Community support, availability of frameworks and so on. Later it gives you a better understanding of available free forms of corpus and different types of dataset. After this, you will know how to choose a dataset for natural language processing applications and find the right NLP techniques to process sentences in datasets and understand their structure. You will also learn how to tokenize different parts of sentences and ways to analyze them. During the course of the book, you will explore the semantic as well as syntactic analysis of text. You will understand how to solve various ambiguities in processing human language and will come across various scenarios while performing text analysis. You will learn the very basics of getting the environment ready for natural language processing, move on to the initial setup, and then quickly understand sentences and language parts. You will learn the power of Machine Learning and Deep Learning to extract information from text data. By the end of the book, you will have a clear understanding of natural language processing and will have worked on multiple examples that implement NLP in the real world.
Table of Contents (13 chapters)

Understanding word-sense disambiguation basics

Word-sense disambiguation (WSD) is a well-known problem in NLP. First of all, let's understand what WSD is. WSD is used in identifying what the sense of a word means in a sentence when the word has multiple meanings. When a single word has multiple meaning, then for the machine it is difficult to identify the correct meaning and to solve this challenging issue we can use the rule-based system or machine learning techniques.

In this chapter, our focus area is the RB system. So, we will see the flow of how WSD is solved. In order to solve this complex problem using the RB system, you can take the following steps:

  • When you are trying to solve WSD for any language you need to have a lot of data where you can find the various instances of words whose meaning can be different from sentence to sentence
  • Once you have this kind of dataset...