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

Exploring the movies data details for the recommendation system in Spark 2.0


In this recipe, we will begin to explore the data file by parsing data into a Scala case class and generating a simple metric. The key here is to acquire an understanding of our data, so in the later stages, if nebulous results arise, we will have some insight to make an informed conclusion about the correctness of our results.

This is the first of the two recipes which explore the movie dataset. Data exploration is an important first step in statistical analysis and machine learning.

One of the best ways to understand the data quickly is to generate a data visualization of it, and we will use JFreeChart to do that. It is very important to make sure you feel comfortable with the data and understand firsthand what is in each file, and the story it tries to tell.

We must always explore, understand, and visualize the data before we do anything else. Most performances and misses with ML and others systems can be traced...