Book Image

Mastering Natural Language Processing with Python

By : Deepti Chopra, Nisheeth Joshi, Iti Mathur
Book Image

Mastering Natural Language Processing with Python

By: Deepti Chopra, Nisheeth Joshi, Iti Mathur

Overview of this book

<p>Natural Language Processing is one of the fields of computational linguistics and artificial intelligence that is concerned with human-computer interaction. It provides a seamless interaction between computers and human beings and gives computers the ability to understand human speech with the help of machine learning.</p> <p>This book will give you expertise on how to employ various NLP tasks in Python, giving you an insight into the best practices when designing and building NLP-based applications using Python. It will help you become an expert in no time and assist you in creating your own NLP projects using NLTK.</p> <p>You will sequentially be guided through applying machine learning tools to develop various models. We’ll give you clarity on how to create training data and how to implement major NLP applications such as Named Entity Recognition, Question Answering System, Discourse Analysis, Transliteration, Word Sense disambiguation, Information Retrieval, Sentiment Analysis, Text Summarization, and Anaphora Resolution.</p>
Table of Contents (17 chapters)
Mastering Natural Language Processing with Python
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Introducing morphology


Morphology may be defined as the study of the production of tokens with the help of morphemes. A morpheme is the basic unit of language carrying meaning. There are two types of morpheme: stems and affixes (suffixes, prefixes, infixes, and circumfixes).

Stems are also referred to as free morphemes, since they can even exist without adding affixes. Affixes are referred to as bound morphemes, since they cannot exist in a free form and they always exist along with free morphemes. Consider the word unbelievable. Here, believe is a stem or a free morpheme. It can exist on its own. The morphemes un and able are affixes or bound morphemes. They cannot exist in a free form, but they exist together with stem. There are three kinds of language, namely isolating languages, agglutinative languages, and inflecting languages. Morphology has a different meaning in all these languages. Isolating languages are those languages in which words are merely free morphemes and they do not carry...