Predicting the Future

One of the most well known examples of using Gaussian Process Modelling for forward prediction is the application described in Rasmussen & Williams, which shows the prediction for the future of atmospheric CO2 levels. When the book was written, the prediction showed the increase in CO2 concentration continuing at roughly the same rate. However, things …

Furrier Cats

Last week I gave an introductory lecture on imaging with radio interferometers. I started off with a Python demonstration of Fourier filtering using cat pictures, which seemed pretty popular and lead to one of my fellow lecturers coining the term "Furrier Cats" (this is genius and I wish I'd thought of it). Since it was …

Friends of Fiends

It's not a typo. Well it is, but this time it's deliberate. I mistype friends-of-friends so often that I've decided to just give in and call my algorithm "friends-of-fiends" (FOF) instead. Problem statement:  Student X is analysing data towards a galaxy cluster that doesn't have a known redshift, i.e. a known distance away from us. …