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

Wrapping MOJOs using the H2O MOJO API

Let's first touch upon a few precursors before learning how to wrap MOJOs inside larger software programs.

Obtaining the MOJO runtime

You can download h2o-genmodel.jar when you download your MOJO from the IDE after model building. This is simply a matter of adding a new argument to your download statement, as follows:

Model.download_mojo(path="path/for/my/mojo", 
                    get_genmodel_jar=True)

This method of obtaining h2o-genmodel.jar generally is not done in a governed production deployment. This is because h2o-genmodel.jar is generic to all MOJOs and is a concern of the software developer and not the data scientists.

Software developers can download the MOJO runtime from the Maven repository at https://mvnrepository.com/artifact/ai.h2o/h2o-genmodel. The h2o-genmodel.jar is backward-compatible; it should...