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

Using the Scala Breeze library to do graphics in Spark 2.0


In this recipe, we will use the functions scatter() and plot() from the Scala Breeze linear algebra library (part of) to draw a scatter plot from a two-dimensional data. Once the results are on the Spark cluster, either the actionable data can be used in the driver for drawing or a JPEG or GIF can be generated in the backend and pushed forward for and speed (popular with GPU-based analytical databases such as MapD)

How to do it...

  1. First, we need to download the necessary ScalaNLP library. Download the JAR from the Maven repository available at https://repo1.maven.org/maven2/org/scalanlp/breeze-viz_2.11/0.12/breeze-viz_2.11-0.12.jar.
  1. Place the JAR in the C:\spark-2.0.0-bin-hadoop2.7\examples\jars directory on a Windows machine:
  2. In macOS, please put the JAR in its correct path. For our setting examples, the path is /Users/USERNAME/spark/spark-2.0.0-bin-hadoop2.7/examples/jars/.
  3. The following is the sample screenshot showing the JARs:
  4. Start...