Joshua Rooijakkers

I am a researcher in the School of Computing and Data Science at the University of Hong Kong, supervised by Edwin Fong.

Previously, I was part of the Fundamentals of Statistical Machine Learning group at UCL, where I worked with Jeremias Knoblauch on robust Bayesian machine learning. Prior to that, I completed my bachelor’s and master’s degree in Econometrics at Erasmus University Rotterdam, with a minor in AI Engineering at TU Delft.

News

Mar 05, 2026	I am honored to receive the Jan Hemelrijk Award for my master’s thesis!
Oct 31, 2025	Finished writing my first paper Multi-Output Robust and Conjugate Gaussian Processes!
Apr 11, 2025	Our team reached 2nd place at the World Championships Econometrics!

Selected publications

Preprint

Multi-Output Robust and Conjugate Gaussian Processes

Joshua Rooijakkers, Leiv Rønneberg, François-Xavier Briol, and 2 more authors

arXiv preprint arXiv:2510.26401, 2025

arXiv Bib Code

@article{rooijakkers2025multi,
  title = {Multi-Output Robust and Conjugate Gaussian Processes},
  author = {Rooijakkers, Joshua and R{\o}nneberg, Leiv and Briol, Fran{\c{c}}ois-Xavier and Knoblauch, Jeremias and Altamirano, Matias},
  journal = {arXiv preprint arXiv:2510.26401},
  year = {2025},
}