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Mastering Machine Learning with R. - Third Edition

You're reading from  Mastering Machine Learning with R. - Third Edition

Product type Book
Published in Jan 2019
Publisher
ISBN-13 9781789618006
Pages 354 pages
Edition 3rd Edition
Languages
Author (1):
Cory Lesmeister Cory Lesmeister
Profile icon Cory Lesmeister
Toc

Table of Contents (16) Chapters close

Preface 1. Preparing and Understanding Data 2. Linear Regression 3. Logistic Regression 4. Advanced Feature Selection in Linear Models 5. K-Nearest Neighbors and Support Vector Machines 6. Tree-Based Classification 7. Neural Networks and Deep Learning 8. Creating Ensembles and Multiclass Methods 9. Cluster Analysis 10. Principal Component Analysis 11. Association Analysis 12. Time Series and Causality 13. Text Mining 14. Creating a Package 15. Other Books You May Enjoy

Support vector machines

The first time I heard of support vector machines, I have to admit that I was scratching my head, thinking that this was some form of academic obfuscation or inside joke. However, my fair review of SVM has replaced this natural skepticism with a healthy respect for the technique.

SVMs have been shown to perform well in a variety of settings and are often considered one of the best out-of-the-box classifiers (James, G., 2013). To get a practical grasp of the subject, let's look at another simple visual example. In the following screenshot, you'll see that the classification task is linearly separable. However, the dotted line and solid line are just two among an infinite number of possible linear solutions.

You would have separating hyperplanes in a problem that has more than two dimensions:

So many solutions can be problematic for generalization...

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