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Mathangi Sri - Practical Natural Language Processing with Python: With Case Studies from Industries Using Text Data at Scale

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Mathangi Sri Practical Natural Language Processing with Python: With Case Studies from Industries Using Text Data at Scale
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Work with natural language tools and techniques to solve real-world problems. This book focuses on how natural language processing (NLP) is used in various industries. Each chapter describes the problem and solution strategy, then provides an intuitive explanation of how different algorithms work and a deeper dive on code and output in Python.

Practical Natural Language Processing with Python follows a case study-based approach. Each chapter is devoted to an industry or a use case, where you address the real business problems in that industry and the various ways to solve them. You start with various types of text data before focusing on the customer service industry, the type of data available in that domain, and the common NLP problems encountered. Here you cover the bag-of-words model supervised learning technique as you try to solve the case studies. Similar depth is given to other use cases such as online reviews, bots, finance, and so on. As you cover the problems in these industries youll also cover sentiment analysis, named entity recognition, word2vec, word similarities, topic modeling, deep learning, and sequence to sequence modelling.

By the end of the book, you will be able to handle all types of NLP problems independently. You will also be able to think in different ways to solve language problems. Code and techniques for all the problems are provided in the book.

What You Will Learn

  • Build an understanding of NLP problems in industry
  • Gain the know-how to solve a typical NLP problem using language-based models and machine learning
  • Discover the best methods to solve a business problem using NLP - the tried and tested ones
  • Understand the business problems that are tough to solve

Who This Book Is For

Analytics and data science professionals who want to kick start NLP, and NLP professionals who want to get new ideas to solve the problems at hand.

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Book cover of Practical Natural Language Processing with Python Mathangi - photo 1
Book cover of Practical Natural Language Processing with Python
Mathangi Sri
Practical Natural Language Processing with Python
With Case Studies from Industries Using Text Data at Scale
1st ed.
Logo of the publisher Mathangi Sri Bangalore Karnataka India Any source - photo 2
Logo of the publisher
Mathangi Sri
Bangalore, Karnataka, India

Any source code or other supplementary material referenced by the author in this book is available to readers on GitHub via the books product page, located at www.apress.com/978-1-4842-6245-0 . For more detailed information, please visit www.apress.com/source-code .

ISBN 978-1-4842-6245-0 e-ISBN 978-1-4842-6246-7
https://doi.org/10.1007/978-1-4842-6246-7
Mathangi Sri 2021
Apress Standard
Trademarked names, logos, and images may appear in this book. Rather than use a trademark symbol with every occurrence of a trademarked name, logo, or image we use the names, logos, and images only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights.
The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. The publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Distributed to the book trade worldwide by Springer Science+Business Media New York, 1 New York Plaza, Suite 4600, New York, NY 10004-1562, USA. Phone 1-800-SPRINGER, fax (201) 348-4505, e-mail orders-ny@springer-sbm.com, or visit www.springeronline.com. Apress Media, LLC is a California LLC and the sole member (owner) is Springer Science + Business Media Finance Inc (SSBM Finance Inc). SSBM Finance Inc is a Delaware corporation.

To my loving daughter Sahana

who inspires me every day with her unending spirit to learn

Introduction

I am fortunate to have had the exposure and opportunity to solve complex NLP problems that benefited various businesses across geographies. This book comes from my learnings and hence it is a practitioner view of solving text problems. Solving NLP problems involves a certain combination of creativity and technical knowledge. Sometimes the best deep learning methods do not solve a problem as well as simple solutions do. I am always reminded of Occams razor, which states that when there are alternatives available, the simplest one possibly solves the problem best.

In my opinion, the answer to any problem lies in the data. This is why the first chapter talks about text data. I cover different types of text data and the information that can be extracted from this data. Chapters is dedicated to virtual assistants . I explore techniques to build bots using state-of-the-art neural network architectures. This chapter also introduces natural language generation concepts.

Acknowledgments

I want to thank my husband, Satish. I brainstormed with him several times during the course of this book on the technical and business use cases. I also want to thank the team at Apress for providing adequate reviews and guidance on the content. I learned all the concepts on the job, so I thank all the people with whom I have had the privilege to work with and learn from.

Table of Contents
About the Author
Mathangi Sri
is a renowned data science leader in India She has 11 patent grants and 20 - photo 3

is a renowned data science leader in India. She has 11 patent grants and 20+ patents published in the area of intuitive customer experience, indoor positioning, and user profiles. She has 16+ years of a proven track record in building world-class data science solutions and products. She is adept in machine learning, text mining, and NLP technologies and tools. She has built data science teams across large organizations like Citibank, HSBC, and GE as well as tech startups like 247.ai , PhonePe, and Gojek. She advises startups, enterprises, and venture capitalists on data science strategy and roadmaps. She is an active contributor on machine learning to many premier institutes in India. She was recognized as one of The Phenomenal SHE by the Indian National Bar Association in 2019.

About the Technical Reviewer
Manohar Swamynathan
is a data science practitioner and an avid programmer with over 14 years of - photo 4
is a data science practitioner and an avid programmer, with over 14+ years of experience in various data science-related areas, including data warehousing, business intelligence, analytical tool development, ad-hoc analysis, predictive modeling, data science product development, consulting, formulating strategy, and executing analytics programming. His career has covered the life cycle of data across different domains such as US mortgage banking, retail/e-commerce, insurance, and industrial IoT. Hes also involved in the technical review of books about data science using Python and R. He has a bachelors degree with a specialization in physics, mathematics, and computers, and a Masters degree in project management. Hes currently living in Bengaluru, the silicon valley of India.
Mathangi Sri 2021
M. Sri Practical Natural Language Processing with Python https://doi.org/10.1007/978-1-4842-6246-7_1
1. Types of Data
Mathangi Sri
(1)
Bangalore, Karnataka, India

Natural language processing (NLP) is a field that helps humans communicate with computers naturally. It is a shift from the era when humans had to learn to use computers to computers being trained to understand humans. It is a branch of artificial intelligence (AI) that deals with language. The field dates back to the 1950s when a lot of research was undertaken in the machine translation area. Alan Turing predicted that by the early 2000s computers would be able to flawlessly understand and respond in natural language that you wont be able to distinguish between humans and computers. We are far from that benchmark in the field of NLP. However, some argue that this may not even be the right lens to measure achievements in the field. Be that as it may, NLP is central to the success of many businesses. It is very difficult to imagine life without Google search, Alexa, YouTube recommendations, and so on. NLP has become ubiquitous today.

In order to understand this branch of AI better, lets start with the fundamentals. Fundamental to any data science field is data. Hence understanding text data and various forms of it is at the heart of performing natural language processing. Lets start with some of the most familiar daily sources of text data, from the angle of commercial usage :
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