Book Image

Apache Spark Machine Learning Blueprints

By : Alex Liu
Book Image

Apache Spark Machine Learning Blueprints

By: Alex Liu

Overview of this book

There's a reason why Apache Spark has become one of the most popular tools in Machine Learning – its ability to handle huge datasets at an impressive speed means you can be much more responsive to the data at your disposal. This book shows you Spark at its very best, demonstrating how to connect it with R and unlock maximum value not only from the tool but also from your data. Packed with a range of project "blueprints" that demonstrate some of the most interesting challenges that Spark can help you tackle, you'll find out how to use Spark notebooks and access, clean, and join different datasets before putting your knowledge into practice with some real-world projects, in which you will see how Spark Machine Learning can help you with everything from fraud detection to analyzing customer attrition. You'll also find out how to build a recommendation engine using Spark's parallel computing powers.
Table of Contents (18 chapters)
Apache Spark Machine Learning Blueprints
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Feature preparation


In the Feature extraction section of Chapter 2, Data Preparation for Spark ML, we reviewed a few methods for feature extraction as well as their implementation on Apache Spark. All the techniques discussed there can be applied to our datasets here, especially the ones of utilizing time series to create new features.

As mentioned earlier, for this project, we have a target categorical variable of student attrition and a lot of data on demographics, behavior, performance, as well as interventions. The demographic data is almost ready to be used but needs to be merged with the following table for a partial list of the features:

FEATURE NAME

Description

ACT

These are the average ACT scores

AGE

This is the age

UNEMPLOYMENT

This is the student's county unemployment rate

FIRST_GENERATION

This is a first-generation student indicator using the "Y/N" options

HS_GPA

This is the high school GPA

PUBLIC_CODE

This is an indicator of the type of high school

...