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

Introduction


The three workhorses of Spark for efficient processing of data at scale are RDD, DataFrames, and the Dataset API. While each can stand on its own merit, the new paradigm shift favors Dataset as the unifying data API to meet all data wrangling needs in a single interface.

The new Spark 2.0 Dataset API is a type-safe collection of domain objects that can be operated on via transformation (similar to RDDs' filter, map, flatMap(), and so on) in parallel using functional or relational operations. For backward compatibility, Dataset has a view called DataFrame, which is a collection of that are untyped. In this chapter, we demonstrate all three API sets. The figure ahead summarizes the pros and cons of the key components of Spark for data wrangling:

An advanced developer in machine learning must understand and be able to use all three API sets without any issues, for algorithmic augmentation or legacy reasons. While we recommend that every developer should migrate toward the high-level...