Book Image

Practical Automated Machine Learning Using H2O.ai

By : Salil Ajgaonkar
Book Image

Practical Automated Machine Learning Using H2O.ai

By: Salil Ajgaonkar

Overview of this book

With the huge amount of data being generated over the internet and the benefits that Machine Learning (ML) predictions bring to businesses, ML implementation has become a low-hanging fruit that everyone is striving for. The complex mathematics behind it, however, can be discouraging for a lot of users. This is where H2O comes in – it automates various repetitive steps, and this encapsulation helps developers focus on results rather than handling complexities. You’ll begin by understanding how H2O’s AutoML simplifies the implementation of ML by providing a simple, easy-to-use interface to train and use ML models. Next, you’ll see how AutoML automates the entire process of training multiple models, optimizing their hyperparameters, as well as explaining their performance. As you advance, you’ll find out how to leverage a Plain Old Java Object (POJO) and Model Object, Optimized (MOJO) to deploy your models to production. Throughout this book, you’ll take a hands-on approach to implementation using H2O that’ll enable you to set up your ML systems in no time. By the end of this H2O book, you’ll be able to train and use your ML models using H2O AutoML, right from experimentation all the way to production without a single need to understand complex statistics or data science.
Table of Contents (19 chapters)
1
Part 1 H2O AutoML Basics
4
Part 2 H2O AutoML Deep Dive
10
Part 3 H2O AutoML Advanced Implementation and Productization

Summary

In this chapter, we learned how to use H2O AutoML with Apache Spark using an H2O system called H2O Sparkling Water. We started by understanding what Apache Spark is. We investigated the various components that make up the Spark software. Then, we dived deeper into its architecture and understood how it uses a cluster of computers to perform data analysis. We investigated the Spark cluster manager, the Spark driver, Executor, and also the Spark Context. Then, we dived deeper into RDDs and understood how Spark uses them to perform lazy evaluations on transformation operations on the dataset. We also understood that Spark is smart enough to manage its resources efficiently and remove any unused RDDs during operations.

Building on top of this knowledge of Spark, we started exploring what H2O Sparkling Water is and how it uses Spark and H2O together in a seamlessly integrated system. We then dove deeper into its architecture and understood its two types of backends that can be...