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Mastering Predictive Analytics with R, Second Edition

You're reading from   Mastering Predictive Analytics with R, Second Edition Machine learning techniques for advanced models

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Product type Paperback
Published in Aug 2017
Publisher Packt
ISBN-13 9781787121393
Length 448 pages
Edition 2nd Edition
Languages
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Authors (2):
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James D. Miller James D. Miller
Author Profile Icon James D. Miller
James D. Miller
Rui Miguel Forte Rui Miguel Forte
Author Profile Icon Rui Miguel Forte
Rui Miguel Forte
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Table of Contents (16) Chapters Close

Preface 1. Gearing Up for Predictive Modeling FREE CHAPTER 2. Tidying Data and Measuring Performance 3. Linear Regression 4. Generalized Linear Models 5. Neural Networks 6. Support Vector Machines 7. Tree-Based Methods 8. Dimensionality Reduction 9. Ensemble Methods 10. Probabilistic Graphical Models 11. Topic Modeling 12. Recommendation Systems 13. Scaling Up 14. Deep Learning Index

Getting started

Before we get started with discussing the process of tidying data, it would be very prudent to point out that whatever you do to tidy your data, you should be sure to:

  1. Create and save your scripts so that you can use them again for new or similar data sources. This is referred to as reusability. Why spend time recreating the same code, rules, or logic if you don't have to? This applies to new data within the same project (that the scripts were developed for) or new projects you may be involved with in the future.
  2. Tidy your data as "far upstream" as possible, perhaps even at the original source. In other words, save and maintain the original data, but use programmatic scripts to clean it, fix mistakes, and save that cleaned dataset for further analysis.
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