Book Image

Applied Supervised Learning with R

By : Karthik Ramasubramanian, Jojo Moolayil
Book Image

Applied Supervised Learning with R

By: Karthik Ramasubramanian, Jojo Moolayil

Overview of this book

R provides excellent visualization features that are essential for exploring data before using it in automated learning. Applied Supervised Learning with R helps you cover the complete process of employing R to develop applications using supervised machine learning algorithms for your business needs. The book starts by helping you develop your analytical thinking to create a problem statement using business inputs and domain research. You will then learn different evaluation metrics that compare various algorithms, and later progress to using these metrics to select the best algorithm for your problem. After finalizing the algorithm you want to use, you will study the hyperparameter optimization technique to fine-tune your set of optimal parameters. The book demonstrates how you can add different regularization terms to avoid overfitting your model. By the end of this book, you will have gained the advanced skills you need for modeling a supervised machine learning algorithm that precisely fulfills your business needs.
Table of Contents (12 chapters)
Applied Supervised Learning with R
Preface

What is Amazon API Gateway?


Amazon API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale. With this service, we can develop REST as well as WebSocket APIs that act as a front door for applications to access data, business logic, or functionality from other backend services, while protecting the backend services within the private network. These backend services could be any applications that are running on AWS.

The overall flow of our service can be represented as in the following diagram:

Figure 8.9: Workflow of API Gateway, AWS Lambda, and SageMaker

The client (say, a web browser), calls an Amazon API Gateway's defined action and passes the appropriate parameter values. API Gateway passes the request to AWS Lambda, while it also seals the backend so that AWS Lambda stays and executes in a protected private network.

In our case, we will use Lambda to help us tailor the data received from API Gateway into...