Python Machine Learning Cookbook

Chapter 6. Analyzing Text Data

In this chapter, we will cover the following recipes:

• Preprocessing data using tokenization
• Stemming text data
• Converting text to its base form using lemmatization
• Dividing text using chunking
• Building a bag-of-words model
• Building a text classifier
• Identifying the gender
• Analyzing the sentiment of a sentence
• Identifying patterns in text using topic modeling

Introduction

Text analysis and natural language processing (NLP) is an integral part of modern artificial intelligence systems. Computers are good at understanding rigidly-structured data with limited variety. However, when we deal with unstructured free-form text, things begin to get difficult. Developing NLP applications is challenging because computers have a hard time ...