Maris F. L. Galesloot

I am affiliated with the Department of Software Science (SWS) of the Institute for Computing and Information Sciences (iCIS), located at Radboud University in Nijmegen, the Netherlands.

I am supervised by Prof. Dr. Nils Jansen, part of the AI-FM research group and member of the coordinator team of the ELLIS Unit Nijmegen. My ELLIS co-supervisor is Prof. Dr. Nick Hawes from the GOALS research group of the Oxford Robotics Institute located at the University of Oxford in the United Kingdom. Hence, I was a visiting PhD student at the University of Oxford between February and August 2025.

My research interests revolve around sequential decision-making under uncertainty. More specifically, I specialize in model-based reinforcement learning and (online) planning in partially observable and uncertain environments.

My work focuses on developing scalable and robust algorithms that combine the robustness of model-based approaches with the scalability of data-driven learning techniques.

News

Sep 20, 2025	Our paper, entitled “On Evaluating Policies for Robust POMDPs”, was accepted for publication at NeurIPS 2025! Joint main authorship with Eline Bovy and Merlijn Krale.
Jul 11, 2025	Our paper, entitled “Pessimistic Iterative Planning with RNNs for Robust POMDPs”, was accepted for publication at ECAI 2025! I presented an earlier version of the paper at EWRL 2024.
May 26, 2025	Our paper, entitled “Robust Finite-Memory Policy Gradients for Hidden-Model POMDPs”, was accepted for publication at IJCAI 2025!
Jan 15, 2024	My first paper, entitled “Factored Online Planning in Many-Agent POMDPs” has been accepted for publication at AAAI-24!

Selected publications

NeurIPS

On Evaluating Policies for Robust POMDPs

Merlijn Krale, Eline M. Bovy, Maris F. L. Galesloot, and 2 more authors

In NeurIPS, 2025

(to appear)

Bib

@inproceedings{rpomdp,
  title = {On Evaluating Policies for Robust {POMDP}s},
  author = {Krale, Merlijn and Bovy, Eline M. and Galesloot, Maris F. L. and Sim{\~a}o, Thiago D. and Jansen, Nils},
  booktitle = {{NeurIPS}},
  note = {(to appear)},
  year = {2025}
}

IJCAI

Robust Finite-Memory Policy Gradients for Hidden-Model POMDPs

Maris F. L. Galesloot, Roman Andriushchenko, Milan Češka, and 2 more authors

In IJCAI, 2025

arXiv Bib

@inproceedings{DBLP:conf/ijcai/GaleslootA0J025,
  author = {Galesloot, Maris F. L. and Andriushchenko, Roman and \v{C}e\v{s}ka, Milan and Junges, Sebastian and Jansen, Nils},
  title = {Robust Finite-Memory Policy Gradients for Hidden-Model {POMDP}s},
  booktitle = {{IJCAI}},
  pages = {8518--8526},
  publisher = {ijcai.org},
  year = {2025},
}

ECAI

Pessimistic Iterative Planning with RNNs for Robust POMDPs

Maris F. L. Galesloot, Marnix Suilen, Thiago D. Simão, and 4 more authors

In ECAI, 2025

(to appear)

arXiv Bib

@inproceedings{pip-rnn,
  title = {Pessimistic Iterative Planning with RNNs for Robust {POMDP}s},
  author = {Galesloot, Maris F. L. and Suilen, Marnix and Sim{\~a}o, Thiago D. and Carr, Steven and Spaan, Matthijs T. J. and Topcu, Ufuk and Jansen, Nils},
  booktitle = {{ECAI}},
  year = {2025},
  note = {(to appear)},
}

AAAI

Factored Online Planning in Many-Agent POMDPs

Maris F. L. Galesloot, Thiago D. Simão, Sebastian Junges, and 1 more author

In AAAI, 2024

arXiv Bib

@inproceedings{DBLP:conf/aaai/GaleslootSJ024,
  author = {Galesloot, Maris F. L. and Sim{\~{a}}o, Thiago D. and Junges, Sebastian and Jansen, Nils},
  title = {Factored Online Planning in Many-Agent POMDPs},
  booktitle = {{AAAI}},
  pages = {17407--17415},
  publisher = {{AAAI} Press},
  year = {2024},
}