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 are frequent itemsets?


Finding frequent itemsets is a type of counting activity. But unlike producing a simple tally of items we observe in a dataset (today we sold 80 carrots and 100 tomatoes), finding frequent itemsets is slightly different. Specifically, to find frequent itemsets we look for co-occurring sets of items within some larger group. These larger groups are sometimes imagined as supermarket transactions or shopping baskets, and the entire exercise is sometimes called market basket analysis. Staying with the supermarket analogy, the items co-occurring within those baskets are sometimes imagined to be combinations of products purchased at the supermarket. For example, given a set of supermarket transactions or baskets, we might be interested in whether the itemset of {carrots, tomatoes} occurs more frequently in baskets than does the {cucumbers, lemons} itemset.

The purpose of frequent itemset mining is to make interesting discoveries of co-occurring items within a set of...