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

Displaying similar words with Spark using Word2Vec


In this recipe, we will explore which is Spark's tool for assessing word similarity. The Word2Vec algorithm is inspired by the distributional hypothesis in general linguistics. At the core, what it tries to say is that the tokens which occur in the same context (that is, distance from the target) tend to support the primitive concept/meaning.

The Word2Vec algorithm was invented by a team of researchers at Google. Please refer to a white paper mentioned in the There's more... section of this recipe which describes Word2Vec in more detail.

How to do it...

  1. Start a new project in IntelliJ or in an IDE of your choice. Make sure the necessary JAR files are included.
  1. The package statement for the recipe is as follows:
package spark.ml.cookbook.chapter12
  1. Import the necessary packages for Scala and Spark:
import org.apache.log4j.{Level, Logger}
import org.apache.spark.ml.feature.{RegexTokenizer, StopWordsRemover, Word2Vec}
import org.apache.spark.sql...