Book Image

Practical Automated Machine Learning Using H2O.ai

By : Salil Ajgaonkar
Book Image

Practical Automated Machine Learning Using H2O.ai

By: Salil Ajgaonkar

Overview of this book

With the huge amount of data being generated over the internet and the benefits that Machine Learning (ML) predictions bring to businesses, ML implementation has become a low-hanging fruit that everyone is striving for. The complex mathematics behind it, however, can be discouraging for a lot of users. This is where H2O comes in – it automates various repetitive steps, and this encapsulation helps developers focus on results rather than handling complexities. You’ll begin by understanding how H2O’s AutoML simplifies the implementation of ML by providing a simple, easy-to-use interface to train and use ML models. Next, you’ll see how AutoML automates the entire process of training multiple models, optimizing their hyperparameters, as well as explaining their performance. As you advance, you’ll find out how to leverage a Plain Old Java Object (POJO) and Model Object, Optimized (MOJO) to deploy your models to production. Throughout this book, you’ll take a hands-on approach to implementation using H2O that’ll enable you to set up your ML systems in no time. By the end of this H2O book, you’ll be able to train and use your ML models using H2O AutoML, right from experimentation all the way to production without a single need to understand complex statistics or data science.
Table of Contents (19 chapters)
1
Part 1 H2O AutoML Basics
4
Part 2 H2O AutoML Deep Dive
10
Part 3 H2O AutoML Advanced Implementation and Productization

Understanding H2O AutoML event logging

Since H2O AutoML automates most of the ML process, we have given some control to the machine. Encapsulation means that all the complexities that lie in AutoML are all hidden away, and we are just aware of the inputs and whatever output H2O AutoML gives us. If there is any issue in H2O AutoML and it gives us models that don’t make sense or are not expected, then we will need to dig deeper into how AutoML trained the models. Hence, we need a way to keep track of what’s happening internally in H2O AutoML and whether it is training models as expected or not.

When building such software systems that are aimed to be used in production, you will always need a logging system to log information. The virtual nature of software makes it difficult for users to keep track of what is going on as the system does its processing and other activities. Any failures or issues can lead to a cascade of underlying problems that developers may end up...