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

Summary 

In this chapter, we understood the various functionality that H2O Flow has to offer. After getting comfortable with the web UI, we started implementing our ML pipeline. We imported and parsed the Heart Failure Prediction dataset. We understood the various operations that can be performed on the dataframe, understood the metadata and statistics of the dataframe, and prepared the dataset to later train, validate, and predict models.

Then, we trained models on the dataframe using AutoML. We understood the various parameters that needed to be input to correctly configure AutoML. We trained models using AutoML and understood the leaderboard. Then, we dived deeper into the details of the models trained and tried our best to understand their characteristics.

Once our model was trained, we performed predictions on it and then explored the prediction output by combining it with the original dataframe so that we could compare the predicted values.

In the next chapter,...