I was chatting with some cyber-mates at a recent event and the topic of cyber attacks on the U.S. power-grid came up (as it often does these days). The conversation was brief, but the topic made its way into active memory and resurfaced when I saw today’s Data ...

The secret is out: Nina Zumel and I are busy working on Practical Data Science with R2, the second edition of our best selling book on learning data science using the R language. Our publisher, Manning, has a great slide deck describing the book (and a discount code!!!) here: We ...

It is now possible to create public dashboards, based on R code, for free! To illustrate how it works, I’ve used the free version of Displayr...

For my PhD project, I want to use Supervised Machine Learning (SML) to replicate my manual coding efforts onto a larger data set. That means, however, that I need to put in some manual coding effort before the SML algorithms can do their magic! I used ...

For my PhD project, I want to use Supervised Machine Learning (SML) to replicate my manual coding efforts onto a larger data set. That means, however, that I need to put in some manual coding effort before the SML algorithms can do their magic! I used ...

Today, we will look at the GDP data that is released every quarter or so by the Bureau of Economic Analysis (BEA), and get familiar with the BEA API (see the documentation here). For a primer on GDP in general, BEA publishes this guide. To access the BEA API, we ...

Is your deep convolutional network misclassifying images? You can find out why with a heatmap of class activation overlaid on its misclassified pictures. A heatmap overlay shows parts of an image most activated in a neural network’s last convolution...

When modeling frequency outcomes, we often need to go beyond the standard Poisson regression due to the strict distributional assumption and to consider more flexible alternatives. In general, there are two broad categories of modeling approaches in light of practical concerns about frequency outcomes. The first category of models are ...