Book Image

R Machine Learning Projects

By : Dr. Sunil Kumar Chinnamgari
Book Image

R Machine Learning Projects

By: Dr. Sunil Kumar Chinnamgari

Overview of this book

R is one of the most popular languages when it comes to performing computational statistics (statistical computing) easily and exploring the mathematical side of machine learning. With this book, you will leverage the R ecosystem to build efficient machine learning applications that carry out intelligent tasks within your organization. This book will help you test your knowledge and skills, guiding you on how to build easily through to complex machine learning projects. You will first learn how to build powerful machine learning models with ensembles to predict employee attrition. Next, you’ll implement a joke recommendation engine and learn how to perform sentiment analysis on Amazon reviews. You’ll also explore different clustering techniques to segment customers using wholesale data. In addition to this, the book will get you acquainted with credit card fraud detection using autoencoders, and reinforcement learning to make predictions and win on a casino slot machine. By the end of the book, you will be equipped to confidently perform complex tasks to build research and commercial projects for automated operations.
Table of Contents (12 chapters)
10
The Road Ahead

Understanding the MNIST dataset

Modified National Institute of Standards and Technology (MNIST) is a dataset that contains images of handwritten digits. This dataset is pretty popular in the ML community for implementing and testing computer vision algorithms. The MNIST dataset is an open dataset made available by Professor Yann LeCun at http://yann.lecun.com/exdb/mnist/, where separate files that represent the training dataset and test dataset are available. The labels corresponding to the test and training datasets are also available as separate files. The training dataset has 60,000 samples and the test dataset has 10,000 samples.

The following diagram shows some sample images from the MNIST dataset. Each of the images also comes with a label indicating the digit shown in the following screenshot:

Sample images from MNIST dataset

The labels for the images shown in the preceding...