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

The components of H2O machine learning at scale

As introduced in the previous chapter and emphasized throughout this book, H2O machine learning overcomes problems of scale. The following is a brief introduction of each component of H2O machine learning at scale and how each overcomes these challenges.

H2O Core – in-memory distributed model building

H2O Core allows a data scientist to write code to build models using well-known machine learning algorithms. The coding experience is through an H2O API expressed in Python, R, or Java/Scala language and written in their favorite client or IDE, for example Python in a Jupyter notebook. The actual computation of model building, however, takes place on an enterprise server cluster (not the IDE environment) and leverages the server cluster's vast pool of memory and CPUs needed to run machine learning algorithms against massive data volumes.  

So, how does this work? First, data used for model building is partitioned...