Book Image

Apache Spark 2.x Machine Learning Cookbook

By : Mohammed Guller, Siamak Amirghodsi, Shuen Mei, Meenakshi Rajendran, Broderick Hall
Book Image

Apache Spark 2.x Machine Learning Cookbook

By: Mohammed Guller, Siamak Amirghodsi, Shuen Mei, Meenakshi Rajendran, Broderick Hall

Overview of this book

Machine learning aims to extract knowledge from data, relying on fundamental concepts in computer science, statistics, probability, and optimization. Learning about algorithms enables a wide range of applications, from everyday tasks such as product recommendations and spam filtering to cutting edge applications such as self-driving cars and personalized medicine. You will gain hands-on experience of applying these principles using Apache Spark, a resilient cluster computing system well suited for large-scale machine learning tasks. This book begins with a quick overview of setting up the necessary IDEs to facilitate the execution of code examples that will be covered in various chapters. It also highlights some key issues developers face while working with machine learning algorithms on the Spark platform. We progress by uncovering the various Spark APIs and the implementation of ML algorithms with developing classification systems, recommendation engines, text analytics, clustering, and learning systems. Toward the final chapters, we’ll focus on building high-end applications and explain various unsupervised methodologies and challenges to tackle when implementing with big data ML systems.
Table of Contents (20 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Introduction


This chapter, along with the next chapter, covers the fundamental techniques for regression and classification available in Spark 2.0 ML and MLlib library. Spark 2.0 highlights a new direction by moving the RDD-based regressions (see the next chapter) to maintenance mode while emphasizing Linear Regression and Generalized Regression going forward.

At a high level, the new API design parameterization of elastic net to the ridge versus Lasso regression and everything in between, as opposed to a named API (for example, LassoWithSGD). The new API approach is a much cleaner design and forces you to learn elastic net and its power when it comes to feature engineering that remains an art in data science. We provide adequate examples, variations, and notes to guide you through the complexities in these techniques.

The following figure depicts the regression and classification coverage (part 1) in this chapter:

First, you will learn how to implement linear regression using algebraic equations...