Book Image

Apache Spark for Data Science Cookbook

By : Padma Priya Chitturi
Book Image

Apache Spark for Data Science Cookbook

By: Padma Priya Chitturi

Overview of this book

Spark has emerged as the most promising big data analytics engine for data science professionals. The true power and value of Apache Spark lies in its ability to execute data science tasks with speed and accuracy. Spark’s selling point is that it combines ETL, batch analytics, real-time stream analysis, machine learning, graph processing, and visualizations. It lets you tackle the complexities that come with raw unstructured data sets with ease. This guide will get you comfortable and confident performing data science tasks with Spark. You will learn about implementations including distributed deep learning, numerical computing, and scalable machine learning. You will be shown effective solutions to problematic concepts in data science using Spark’s data science libraries such as MLLib, Pandas, NumPy, SciPy, and more. These simple and efficient recipes will show you how to implement algorithms and optimize your work.
Table of Contents (17 chapters)
Apache Spark for Data Science Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Running an RBM with DeepLearning4j over Spark


In this recipe, we'll see how to run a restricted Boltzmann machine for classifying the iris dataset.

Getting ready

To step through this recipe, you will need a running Spark cluster either in pseudo distributed mode or in one of the distributed modes, that is, standalone, YARN, or Mesos. Also, get familiar with ND4S, that is, n-dimensional arrays for Scala (Scala bindings for ND4J). ND4J and ND4S are scientific computing libraries for the JVM. Please visit http://nd4j.org/ for details. The pre-requisites to be installed are Java 7, IntelliJ, and the Maven or SBT build tool.

How to do it…

  1. Start an application named RBMWithSpark. Initially, specify the following libraries in the build.sbt file:

          libraryDependencies ++= Seq( 
          "org.apache.spark" %% "spark-core" % "1.6.0", 
          "org.apache.spark" %% "spark-mllib" % "1.6.0", 
          "org.deeplearning4j" % "deeplearning4j-core" % "0.4-rc3.8", 
          "org.deeplearning4j" ...