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

H2O machine learning algorithms

H2O has extensive unsupervised and supervised learning algorithms with similar reusable API constructs – for example, similar ways to set hyperparameters or invoke explainability capabilities. These algorithms are identical from an H2O 3 or Sparkling Water perspective and are overviewed in the following diagram:

Figure 4.2 – H2O algorithms

Each algorithm has an extensive set of parameters and hyperparameters to set or leverage as defaults. The algorithms accept H2OFrames as data inputs. Remember that an H2OFrame is simply a handle on the IDE client to the distributed in-memory data on the remote H2O cluster where the algorithm processes it.

Let's take a look at H2O's distributed machine learning algorithms.

H2O unsupervised learning algorithms

Unsupervised algorithms do not predict but rather attempt to find clusters and anomalies in data, or to reduce the dimensionality of a dataset. H2O...