A while ago I wanted to explore my career options so I did a bit of interviewing for various companies. In one of the technical interviews, I was tasked to analyse a dataset and build a predictive model. Noticing that the target variable was ordinal, I decided to build an ordinal regression model using a Bayesian approach. Now, I’m guessing ordinal regression, and Bayesian methods, aren’t that well known, because the interviewers were completely unfamiliar and somewhat sceptical. Read more

Me and my mates are big fans of craft beer, and from time to time organise our own beer tastings. Each participant gets to give a single score between 1 and 5 (half point increments are allowed) to each beer and afterwards we compare scores and see which beer came out on top. Sour beer and imperial stouts are some of our favourite styles, but this time we decided to do something different: A blind tasting with the cheapest lager we could find. Read more

The data frame is the workhorse of anything related to data and is an incredibly flexible tool. It can be used for almost everything: organising, filtering, transforming, plotting, etc. In this article we are going to see that it is probaly even more flexible than people think! Good old data frames When you think of data frames you might be thinking of something square with numbers in it. Perhaps something like Read more