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 started by understanding what the usual problems are when working with an ML service in production. We understood how the portability of software, as well as ML models, plays an important role in seamless deployments. We also understood how Java’s platform independence makes it good for deployments and how POJOs play a role in it.

Then, we explored what POJOs are and how they are independently functioning objects in the Java domain. We also learned that H2O has provisions to extract models trained by AutoML in the form of POJOs, which we can use as self-contained ML models capable of making predictions.

Building on top of this, we learned how to extract ML models in H2O as POJOs in Python, R, and H2O Flow. Once we understood how to download H2O ML models as POJOs, we learned how to use them to make predictions.

First, we understood that we need the h2o-genmodel.jar library and that it is responsible for interpreting the model POJO in Java...