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

Understanding the basics of H2O Flow

H2O Flow is an open source web interface that helps users execute code, plot graphs, and display dataframes on a single page called a Flow notebook or just Flow.

Users of Jupyter notebooks will find H2O Flow very similar. You write your executable code in cells, and the output of the code is displayed below it when you execute the cell. Then, the cursor moves on to the next cell. The best thing about a Flow is that it can be easily saved, exported, and imported between various users. This helps a lot of data scientists share results among various stakeholders, as they just need to save the execution results and share the flow.

In the following sub-sections, we will gain an understanding of the basics of H2O Flow. Let’s begin our journey with H2O Flow by, first, downloading it to our system.

Downloading and launching H2O Flow

In order to run H2O Flow, you will need to first download the H2O Flow Java Archive (JAR) file onto your...