IntroductionA triangle test is a test beloved by sensory scientists for its simplicity and general use in detecting presence of product differences. The principle is simple. Test subjects get served three samples. One of these contains A, two of these ... [Read more...]

Today, I want to highlight the Financial Turbulence Index idea introduced by Mark Kritzman and Yuanzhen Li in the Skulls, Financial Turbulence, and Risk Management paper. Timely Portfolio did a great series of posts about Financial Turbulence: Part 1, Part 2, Part 3. As example, I will compute Financial Turbulence for the equal ... [Read more...]

I’ve made the acquaintance of a group of data analysts here in the triangle and have agreed to arrange an outing to the Durham Bulls minor league baseball team. Because it’s for stat nerds and because I was curious, I went looking for some baseball data to analyze. ... [Read more...]

The concept is to make a GUI to provide a static and dynamic linking between data and its network representations. Static access will involve making networks based on data and metadata stored in some table or spreadsheet. Dynamic control will provide interactive access to network construction and annotation properties. Together, ... [Read more...]

We’re going to try, this December, to bring you an “Advent CalendaR,” for each of the 24 days leading up to Christmas. Each day, our hope is to unwrap a useful R package to show you a useful or interesting function inside! Today&#821... [Read more...]

Discussing with some friends the other day, one of them mentioned a supposedly famous quote from Einstein saying that 1 + 1 = 3. Despite my best efforts, Google couldn’t find that particular quote. Anyway, we were trying to understand how could have Einstein come up with that. Our answer was that the proposition “1 + 1 = 3” ... [Read more...]