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

Results explanation


After we passed our model evaluation stage and decided to select the estimated and evaluated model as our final model, our next task is to interpret results to the company executives and technicians.

Here, we will work on results explanation with a focus on large influencing variables.

Big influencers and their impacts

As we briefly discussed before, quality and freshness are very different for each dataset. Each data has its own weakness, as summarized in the following:

Category

Weakness

Web Log

incomplete

Account

old

Computer device

incomplete

User

old

Business

Incomplete and old

Due to the preceding issues, we often do not have enough data to score each transaction or score it with good accuracy, and we can only score it later. Because of this, the company hopes to identify some special signals or insights that can be used to take action quickly and easily.

The following briefly summarizes some of the result samples that we use some functions from randomForest...