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Mastering Predictive Analytics with R

Mastering Predictive Analytics with R

3.9 (18)
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Mastering Predictive Analytics with R

Mastering Predictive Analytics with R

3.9 (18)

Overview of this book

This book is intended for the budding data scientist, predictive modeler, or quantitative analyst with only a basic exposure to R and statistics. It is also designed to be a reference for experienced professionals wanting to brush up on the details of a particular type of predictive model. Mastering Predictive Analytics with R assumes familiarity with only the fundamentals of R, such as the main data types, simple functions, and how to move data around. No prior experience with machine learning or predictive modeling is assumed, however you should have a basic understanding of statistics and calculus at a high school level.
Table of Contents (13 chapters)
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12
Index

Modeling the topics of online news stories


To see how topic models perform on real data, we will look at two data sets containing articles originating from BBC News during the period of 2004-2005. The first data set, which we will refer to as the BBC data set, contains 2,225 articles that have been grouped into five topics. These are business, entertainment, politics, sports, and technology.

The second data set, which we will call the BBCSports data set, contains 737 articles only on sports. These are also grouped into five categories according to the type of sport being described. The five sports in question are athletics, cricket, football, rugby, and tennis. Our objective will be to see if we can build topic models for each of these two data sets that will group together articles from the same major topic.

Note

Both BBC data sets were presented in a paper by D. Greene and P. Cunningham, titled Producing Accurate Interpretable Clusters from High-Dimensional Data and published in the proceedings...

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