Joshua Rooijakkers

I am a first-year PhD student at Imperial College London, working with Joey Bose on generative modeling and AI4Science.

Previously, I worked on probabilistic machine learning at UCL and the University of Hong Kong. I completed my bachelor’s and master’s degree in Econometrics at Erasmus University Rotterdam.

News

Sep 24, 2026	R-MOGP was accepted to NeurIPS 2026!
Mar 05, 2026	I am honored to receive the Jan Hemelrijk Award for my master’s thesis!
Apr 11, 2025	Our team reached 2nd place at the World Championships Econometrics!

Selected publications

NeurIPS

Outlier-Robust Multi-Output Gaussian Processes

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

Advances in Neural Information Processing Systems, 2026

arXiv Bib Code

@article{rooijakkers2025multi,
  title = {Outlier-Robust Multi-Output Gaussian Processes},
  author = {Rooijakkers, Joshua and R{\o}nneberg, Leiv and Briol, Fran{\c{c}}ois-Xavier and Knoblauch, Jeremias and Altamirano, Matias},
  journal = {Advances in Neural Information Processing Systems},
  year = {2026},
}

Preprint

Martingale Posterior Cox Processes

Joshua Rooijakkers and Edwin Fong

arXiv preprint arXiv:2610.24787, 2026

arXiv Bib Code

@article{rooijakkers2025martingale,
  title = {Martingale Posterior Cox Processes},
  author = {Rooijakkers, Joshua and Fong, Edwin},
  journal = {arXiv preprint arXiv:2610.24787},
  year = {2026},
}