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

Chapter 7: Understanding ML Models

Now that we have built a few models using H2O software, the next step before production is to understand how the model is making decisions. This has been termed variously as machine learning interpretability (MLI), explainable artificial intelligence (XAI), model explainability, and so on. The gist of all these terms is that building a model that predicts well is not enough. There is an inherent risk in deploying any model before fully trusting it. In this chapter, we outline a set of capabilities within H2O for explaining ML models.

By the end of this chapter, you will be able to do the following:

  • Select an appropriate model metric for evaluating your models.
  • Explain what Shapley values are and how they can be used.
  • Describe the differences between global and local explainability.
  • Use multiple diagnostics to build understanding and trust in a model.
  • Use global and local explanations along with model performance metrics...