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 Architecture and Training

Model training is one of the core components of a Machine Learning (ML) pipeline. It is the step in the pipeline where the system reads and understands the patterns in the dataset. This learning outputs a mathematical representation of the relationship between the different features in the dataset and the target value. The way in which the system reads and analyzes data depends on the ML algorithm being used and its intricacies. This is where the primary complexity of ML lies. Every ML algorithm has its own way of interpreting the data and deriving information from it. Every ML algorithm aims to optimize certain metrics while trading off certain biases and variances. Automation done by H2O AutoML further complicates this concept. Trying to understand how that would work can be overwhelming for many engineers.

Don’t be discouraged by this complexity. All sophisticated systems can be broken down into simple components. Understanding...