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 have come to understand the high-level architecture of H2O and what the different layers that comprise the overall architecture are. We then dived deep into the client and JVM layer of the architecture, where we understood the different components that make up the H2O software stack. Next, keeping the architecture of H2O in mind, we came to understand the flow of interactions that take place between the client and server, where we understood how exactly we command the H2O server to perform various ML activities. We also came to understand how the interactions flow down the architecture stack during model training.

Building on this knowledge, we have investigated the sequence of interactions that take place inside the H2O server during model training. We also looked into how H2O trains models using the job manager to coordinate training jobs and how H2O communicates the status of model training with the user. And, finally, we unboxed H2O AutoML and came...