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

Sentiment analysis algorithms


Supposing we wanted to broadly classify the sentiment of a text as positive or negative, we may choose to model the opinion mining task as a classification problem, such as could be solved with supervised machine learning techniques like a Naïve Bayes classifier (NBC). Given a set of positive text features and negative text features, an NBC strategy will allow us to take a new text and classify it as being more positive or more negative given the observations about other similar texts we have made in the past. The machine learning literature is replete with examples of supervised classification, and it is a very reliable approach for certain types of problems.

The trick of course with this type of classification scheme is being able to count on the observations we have made in the past as reliable indicators of future observations. These training examples are critically important and are the basis for the success of the entire scheme. After all, if we choose...