I'm a Professor of Computer Science at University College Dublin, where I focus on AI/ML and recommender systems, with applications in e-commerce, media, and health/fitness; most of my peer-reviewed work can be found here.

Over the last few years I have spent a lot of time blogging about my various interests on Twitter. This began as a place to talk about my interest in the data science of marathon running––which I publish here––but has since evolved into a great outlet for my increasingly varied interests in data and data science, from the applications of data science to the coronavirus pandemic to more recent applications in number theory, and, recently, even a variety of articles on a data analysis of Wordle.