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

Linear regression API with Lasso and 'auto' optimization selection in Spark 2.0


In this recipe, we build on the recipe LinearRegression by selecting LASSO regression explicitly via the setElasticNetParam(0.0) while letting Spark 2.0 pick the optimization on its own using setSolver('auto')We remind again that the RDD-based regression API is now in maintenance mode and this is the preferred method going forward.

How to do it...

  1. We use a housing data set from the UCI machine library depository..
  1. Download the entire data set from the following URLs:

The dataset is comprised of 14 columns with the first 13 columns being the independent variables (that is, features) that try to explain the median price (that is, last column) of an owner-occupied house in Boston, USA.

We have chosen and cleaned the first eight columns as features. We use the first 200 rows to train and predict the median...