Book Image

Mastering Data Mining with Python - Find patterns hidden in your data

By : Megan Squire
Book Image

Mastering Data Mining with Python - Find patterns hidden in your data

By: Megan Squire

Overview of this book

Data mining is an integral part of the data science pipeline. It is the foundation of any successful data-driven strategy – without it, you'll never be able to uncover truly transformative insights. Since data is vital to just about every modern organization, it is worth taking the next step to unlock even greater value and more meaningful understanding. If you already know the fundamentals of data mining with Python, you are now ready to experiment with more interesting, advanced data analytics techniques using Python's easy-to-use interface and extensive range of libraries. In this book, you'll go deeper into many often overlooked areas of data mining, including association rule mining, entity matching, network mining, sentiment analysis, named entity recognition, text summarization, topic modeling, and anomaly detection. For each data mining technique, we'll review the state-of-the-art and current best practices before comparing a wide variety of strategies for solving each problem. We will then implement example solutions using real-world data from the domain of software engineering, and we will spend time learning how to understand and interpret the results we get. By the end of this book, you will have solid experience implementing some of the most interesting and relevant data mining techniques available today, and you will have achieved a greater fluency in the important field of Python data analytics.
Table of Contents (16 chapters)
Mastering Data Mining with Python – Find patterns hidden in your data
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 5. Sentiment Analysis in Text

One of the most powerful skills we can master in data mining is learning how to deal with large amounts of unstructured or semi-structured textual data. Textual data, sometimes just called text, is important because it is everywhere, and because it conveys so much detail about the human experience in so many formats: books, news media, journals, government reports, case law, e-mail messages, chat logs, product reviews, and so on. We also find text data in places we might not expect. For example, when the spoken word is written down it also becomes text, as do song lyrics and video transcripts. When we look at the code that makes up web pages and computer programs, we find text. When we need a computer to leave a record of what activities have transpired, we have it create a text log file. When we need a common, universally interoperable medium for communicating between devices, we often use plain text to do so.

Over the next few chapters, we will be exploring...