What tools are in your data science tool kit?

Let's build a classifier!

• Here's the data set we're going to work with:
• http://groupware.les.inf.puc-rio.br/har

Goal:

• Develop, test, and document a classifier to predict the "class" column of the data set.
• Please hold out a random 10% for an out-of-sample validation. Don't peek!

Bonus Points:

• R
  • markdown (http://rmarkdown.rstudio.com/)
  • dplyr (http://cran.rstudio.com/web/packages/dplyr/vignettes/introduction.html)
  • caret (http://topepo.github.io/caret/index.html)
• Spark (https://spark.apache.org/mllib/)

When you've got an awesome classifier, raise a pull request!