In my previous post I showed you how to randomly split up a dataset into training and testing datasets. (Thanks to all those who emailed me or left comments letting me know that this could be done using other means. As things go with R, it's sometimes ...
I like Labor Economics. Partially because it has a nice mix of theory and practical empiricism, but mostly because it seems to be a sub-field with a number of agreed upon stylized facts that grow not out of micro theory … Continue reading →
When can you safely think of an odds ratio as being similar to a risk ratio?Many people find odds ratios hard to interpret, and thus would prefer to have risk ratios. In response to this, you can find several papers that purport to convert an odds rat...
This post is the last in a series of four on boxplots and some of their extensions. Previous posts in this series have discussed basic boxplots, modified boxplots based on a robust asymmetry measure, and violin plots, an alternative that essentia...
Choropleth Maps are very useful to visualize spatial trends. There have been several blog posts providing detailed instructions on how to create a choropleth map in R using map, spplot and ggplot2. However, I believe that the p...
The doSMP package (and its companion package, revoIPC), previously bundled only with Revolution R, is now available on CRAN for use with open-source R under the GPL2 license. In short, doSMP makes it easy to do SMP parallel processing on a Windows box with multiple processors. (It works on Mac and Linux too, but it's been relatively easy to...
Revolution Analytics today announced a partnership with Jaspersoft, the makers of the most widely-used business intelligence software in the world. With this partnership, Revolution R and Jaspersoft software work together to bring the power of analytics coded in R to business users working with Business Intelligence (BI) dashboards and reports. If you're a Jaspersoft or R developer and would...
Here’s a post generated from my own ignorance of statistics (as opposed to just being marred by it)! In Labor Economics we walked through something called the truncated normal distribution. Truncated distributions come up a lot in the sciences because … Continue reading →
I'm introducing R to a few colleagues this week and want to share why learning a software like R is important... Here are a few articles that explain it well... Other reasons?Importance of data science- Couple years ago Google's Chief Economist Hal Var...
I'm introducing R to a few colleagues this week and want to share why learning a software like R is important... Here are a few articles that explain it well... Other reasons?Importance of data science- Couple years ago Google's Chief Economist Hal Var...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
