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Practical Data Analysis

You're reading from   Practical Data Analysis For small businesses, analyzing the information contained in their data using open source technology could be game-changing. All you need is some basic programming and mathematical skills to do just that.

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Product type Paperback
Published in Oct 2013
Publisher Packt
ISBN-13 9781783280995
Length 360 pages
Edition 1st Edition
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Author (1):
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Hector Cuesta Hector Cuesta
Author Profile Icon Hector Cuesta
Hector Cuesta
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Table of Contents (24) Chapters Close

Practical Data Analysis
Credits
Foreword
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
1. Getting Started FREE CHAPTER 2. Working with Data 3. Data Visualization 4. Text Classification 5. Similarity-based Image Retrieval 6. Simulation of Stock Prices 7. Predicting Gold Prices 8. Working with Support Vector Machines 9. Modeling Infectious Disease with Cellular Automata 10. Working with Social Graphs 11. Sentiment Analysis of Twitter Data 12. Data Processing and Aggregation with MongoDB 13. Working with MapReduce 14. Online Data Analysis with IPython and Wakari Setting Up the Infrastructure Index

Summary


In this chapter, we get into dimensionality reduction and linear classification using SVM. In our example, we create a simple but powerful SVM classifier and we learn how to perform dimensionality reduction using PCA implemented in Python with mlpy. Finally, we present how to use non-linear kernels, such as Gaussian or Polynomial. The work in this chapter is just an introduction to the SVM algorithm with only two dimensions, the results can be improved with a multidimensional approach.

In the next chapter, we will learn how to model an epidemiological event (an infectious disease), and how to simulate an outbreak with cellular automation implemented in D3.js.

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