Book Image

Machine Learning at Scale with H2O

By : Gregory Keys, David Whiting
Book Image

Machine Learning at Scale with H2O

By: Gregory Keys, David Whiting

Overview of this book

H2O is an open source, fast, and scalable machine learning framework that allows you to build models using big data and then easily productionalize them in diverse enterprise environments. Machine Learning at Scale with H2O begins with an overview of the challenges faced in building machine learning models on large enterprise systems, and then addresses how H2O helps you to overcome them. You’ll start by exploring H2O’s in-memory distributed architecture and find out how it enables you to build highly accurate and explainable models on massive datasets using your favorite ML algorithms, language, and IDE. You’ll also get to grips with the seamless integration of H2O model building and deployment with Spark using H2O Sparkling Water. You’ll then learn how to easily deploy models with H2O MOJO. Next, the book shows you how H2O Enterprise Steam handles admin configurations and user management, and then helps you to identify different stakeholder perspectives that a data scientist must understand in order to succeed in an enterprise setting. Finally, you’ll be introduced to the H2O AI Cloud platform and explore the entire machine learning life cycle using multiple advanced AI capabilities. By the end of this book, you’ll be able to build and deploy advanced, state-of-the-art machine learning models for your business needs.
Table of Contents (22 chapters)
1
Section 1 – Introduction to the H2O Machine Learning Platform for Data at Scale
5
Section 2 – Building State-of-the-Art Models on Large Data Volumes Using H2O
11
Section 3 – Deploying Your Models to Production Environments
14
Section 4 – Enterprise Stakeholder Perspectives
17
Section 5 – Broadening the View – Data to AI Applications with the H2O AI Cloud Platform

Hello World – the H2O machine learning code

H2O Core is designed for machine learning at scale; however, it can also be used on small datasets on a user's laptop. In the following section, we will use a minimal code example of H2O-3 to build a machine learning model and export it as a deployable artifact. We will use this example to serve as the most basic unit to understand H2O machine learning code, much like viewing a human stick figure to begin learning about human biology.

Code example

Take a look at the code examples that follow. Here, we are writing in Python, which could be from Jupyter, PyCharm, or another Python client. We will learn that R and Java/Scala are alternative languages in which to write H2O code.

Let's start by importing the H2O library:

import h2o

Recall from the documentation that this has been downloaded from H2O and installed in the client or an IDE environment. This h2o package allows us to run H2O in-memory distributed machine...