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


In this chapter, the second half of regression and classification in Spark 2.0, we highlight RDD-based regression, which is currently in practice in a lot of existing Spark ML implementations. Any intermediate to advanced practitioner is expected to be able to work with these techniques due to the existing code base.

In this chapter, you will learn how to implement a small application using various regressions (linear, logistic, ridge, and lasso) with Stochastic Gradient Descent (SGD) and L-BFGS with linear yet powerful classifiers such as Support Vector Machines (SVM) and Naive Bayes classifiers using the Apache Spark API. We augment each recipe with sample fit measurement when appropriate (for example, MSE, RMSE, ROC, and binary and multi-class metrics) to demonstrate the and completeness of Spark MLlib. We introduce RDD-based linear, logistic, ridge, and lasso regression, and then discuss SVM and Naïve Bayes to demonstrate more sophisticated classifiers.

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