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Mastering Predictive Analytics with R, Second Edition

Mastering Predictive Analytics with R, Second Edition

By : James D. Miller , Rui Miguel Forte
5 (1)
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Mastering Predictive Analytics with R, Second Edition

Mastering Predictive Analytics with R, Second Edition

5 (1)
By: James D. Miller , Rui Miguel Forte

Overview of this book

R offers a free and open source environment that is perfect for both learning and deploying predictive modeling solutions. With its constantly growing community and plethora of packages, R offers the functionality to deal with a truly vast array of problems. The book begins with a dedicated chapter on the language of models and the predictive modeling process. You will understand the learning curve and the process of tidying data. Each subsequent chapter tackles a particular type of model, such as neural networks, and focuses on the three important questions of how the model works, how to use R to train it, and how to measure and assess its performance using real-world datasets. How do you train models that can handle really large datasets? This book will also show you just that. Finally, you will tackle the really important topic of deep learning by implementing applications on word embedding and recurrent neural networks. By the end of this book, you will have explored and tested the most popular modeling techniques in use on real- world datasets and mastered a diverse range of techniques in predictive analytics using R.
Table of Contents (16 chapters)
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8
8. Dimensionality Reduction
15
Index

Predicting the authenticity of banknotes


In this section, we will study the problem of predicting whether a particular banknote is genuine or whether it has been forged. The banknote authentication dataset is hosted at https://archive.ics.uci.edu/ml/datasets/banknote+authentication. The creators of the dataset have taken specimens of both genuine and forged banknotes and photographed them with an industrial camera. The resulting grayscale image was processed using a type of time-frequency transformation known as a wavelet transform. Three features of this transform are constructed, and, along with the image entropy, they make up the four features in total for this binary classification task.

Column name

Type

Definition

waveletVar

Numerical

Variance of the wavelet-transformed image

waveletSkew

Numerical

Skewness of the wavelet-transformed image

waveletCurt

Numerical

Kurtosis of the wavelet-transformed image

entropy

Numerical

Entropy of the image

class

Binary

Authenticity...

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