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

What is topic modeling?


Just like with the keyword-based text summarization techniques we looked at in Chapter 7, Automatic Text Summarization, topic modeling also takes into account what words are used in a text. However, the focus of topic modeling is more about themes and concepts, and not solely about summarizing text. Topic models can be used for summarization, but they can also be used for many other goals:

  • Topic models can assist with organization of documents, for example, to group news articles together into a cohesive section

  • Topic models can help us make recommendations about what to read next by finding materials that have a topic list in common

  • Topic models can improve search results by revealing documents that may use a mix of different keywords but are about the same idea

One critical component of the type topic modeling we will investigate in this chapter is that the analyst does not need to know what the topics or keywords are in advance. Instead, the model is created in an...