Book Image

R Deep Learning Projects

Book Image

R Deep Learning Projects

Overview of this book

R is a popular programming language used by statisticians and mathematicians for statistical analysis, and is popularly used for deep learning. Deep Learning, as we all know, is one of the trending topics today, and is finding practical applications in a lot of domains. This book demonstrates end-to-end implementations of five real-world projects on popular topics in deep learning such as handwritten digit recognition, traffic light detection, fraud detection, text generation, and sentiment analysis. You'll learn how to train effective neural networks in R—including convolutional neural networks, recurrent neural networks, and LSTMs—and apply them in practical scenarios. The book also highlights how neural networks can be trained using GPU capabilities. You will use popular R libraries and packages—such as MXNetR, H2O, deepnet, and more—to implement the projects. By the end of this book, you will have a better understanding of deep learning concepts and techniques and how to use them in a practical setting.
Table of Contents (11 chapters)

Summary


In this chapter, we learned that autoencoders are a technique used mainly in image reconstruction and denoising, to obtain compressed and summarized representations of the data. We saw that they are also used sometimes for fraud detection tasks. The outlier identification comes from measuring the reconstruction error, observing the distribution of the reconstruction error, we can set up thresholds for identifying the outliers and learn the probabilistic process that generates the data. Hence, Variational Autoencoders are also able to generate new data.