The dataset for this chapter has been made available by the Complex Systems Research Group at the Medical University of Vienna. The analysis we'll be performing closely mirrors their research to determine the signals of systematic election fraud in the national elections of countries around the world.
Note
For more information about the research, and for links to download other datasets, visit the book's wiki or the research group's website at http://www.complex-systems.meduniwien.ac.at/elections/election.html.
Throughout this book we'll be making use of numerous datasets. Where possible, we've included the data with the example code. Where this hasn't been possible—either because of the size of the data or due to licensing constraints—we've included a script to download the data instead.
Chapter 1, Statistics is just such a chapter. If you've cloned the chapter's code and intend to follow the examples, download the data now by executing the following on the command line from within the project's directory:
script/download-data.sh
The script will download and decompress the sample data into the project's data directory.
Tip
If you have any difficulty running the download script or would like to follow manual instructions instead, visit the book's wiki at http://wiki.clojuredatascience.com for assistance.
We'll begin investigating the data in the next section.