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Natural Language Processing with Python Quick Start Guide

By : Kasliwal

Buy this Book

Natural Language Processing with Python Quick Start Guide

By: Kasliwal

Buy this Book

Overview of this book

NLP in Python is among the most sought after skills among data scientists. With code and relevant case studies, this book will show how you can use industry-grade tools to implement NLP programs capable of learning from relevant data. We will explore many modern methods ranging from spaCy to word vectors that have reinvented NLP. The book takes you from the basics of NLP to building text processing applications. We start with an introduction to the basic vocabulary along with a work?ow for building NLP applications. We use industry-grade NLP tools for cleaning and pre-processing text, automatic question and answer generation using linguistics, text embedding, text classifier, and building a chatbot. With each project, you will learn a new concept of NLP. You will learn about entity recognition, part of speech tagging and dependency parsing for Q and A. We use text embedding for both clustering documents and making chatbots, and then build classifiers using scikit-learn. We conclude by deploying these models as REST APIs with Flask. By the end, you will be confident building NLP applications, and know exactly what to look for when approaching new challenges.

Preface

Who this book is for

What this book covers

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Free Chapter

Getting Started with Text Classification

What is NLP?

NLP workflow template

Example – text classification workflow

Summary

Tidying your Text

Bread and butter – most common tasks

Tokenization

Stemming and lemmatization

spaCy compared with NLTK and CoreNLP

Correcting spelling

Cleaning a corpus with FlashText

Summary

Leveraging Linguistics

Linguistics and NLP

Summary

Text Representations - Words to Numbers

Vectorizing a specific dataset

Word representations

Document embedding

Summary

Modern Methods for Classification

Machine learning for text

Summary

Deep Learning for NLP

What is deep learning?

Understanding deep learning

Putting it all together – the training loop

Kaggle – text categorization challenge

Summary

Building your Own Chatbot

Why chatbots as a learning example?

Quick code means word vectors and heuristics

Summary

Web Deployments

Web deployments

Summary

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Tidying your Text

Data cleaning is one of the most important and time-consuming tasks when it comes to natural language processing (NLP):

"There's the joke that 80 percent of data science is cleaning the data and 20 percent is complaining about cleaning the data."

– Kaggle founder and CEO Anthony Goldbloom in a Verge Interview

In this chapter, we will discuss some of the most common text pre-processing ideas. This task is universal, tedious, and unavoidable. Most people working in data science or NLP understand that it's an underrated value addition. Some of these tasks don't work well in isolation but have a powerful effect when used in the right combination and order. This chapter will introduce several new words and tools, since the field has a rich history from two worlds. It borrows from both traditional NLP and machine learning. We&apos...

Tech Concepts

Programming languages

Tech Tools