Book Image

Deep Learning with R for Beginners

By : Mark Hodnett, Joshua F. Wiley, Yuxi (Hayden) Liu, Pablo Maldonado
Book Image

Deep Learning with R for Beginners

By: Mark Hodnett, Joshua F. Wiley, Yuxi (Hayden) Liu, Pablo Maldonado

Overview of this book

Deep learning has a range of practical applications in several domains, while R is the preferred language for designing and deploying deep learning models. This Learning Path introduces you to the basics of deep learning and even teaches you to build a neural network model from scratch. As you make your way through the chapters, you’ll explore deep learning libraries and understand how to create deep learning models for a variety of challenges, right from anomaly detection to recommendation systems. The Learning Path will then help you cover advanced topics, such as generative adversarial networks (GANs), transfer learning, and large-scale deep learning in the cloud, in addition to model optimization, overfitting, and data augmentation. Through real-world projects, you’ll also get up to speed with training convolutional neural networks (CNNs), recurrent neural networks (RNNs), and long short-term memory networks (LSTMs) in R. By the end of this Learning Path, you’ll be well-versed with deep learning and have the skills you need to implement a number of deep learning concepts in your research work or projects.
Table of Contents (23 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Index

Summary


We really covered a lot in this chapter! We built a fairly complex traditional NLP example that had many hyperparameters, as well as training it on several machine learning algorithms. It achieved a reputable result of getting 95.24% accuracy. However, when we looked into traditional NLP in more detail, we found that it had some major problems: it requires non-trivial feature engineering, it creates sparse high-dimensional data frames, and it may require discarding a substantial amount of data before machine learning.

In comparison, the deep learning approach uses word vectors or embeddings, which are much more efficient and do not require preprocessing. We ran through a number of deep learning approaches, including 1D convolutional layers, Recurrent Neural Networks, GRUs, and LSTM. We finally combined the two best previous approaches into one approach in our final model to get 96.08% accuracy, compared to 95.24% by using traditional NLP.

In the next chapter, we will develop models...