Artem Tsikiridis

artem.tsikiridis@tum.de

Boltzmannstr. 3

85748 Munich, Germany

Welcome! I am a postdoctoral researcher at the Department of Computer Science of the Technical University of Munich. I am hosted by Martin Bichler at the Chair of Decision Sciences & Systems.

Before this, I was a postdoc for two wonderful years at the Centrum Wiskunde & Informatica (CWI) in Amsterdam, hosted by Guido Schäfer in the Networks & Optimization (N&O) group. I completed my PhD in 2023 at the Department of Informatics of the Athens University of Economics and Business, where I was very fortunate to be advised by Vangelis Markakis.

I enjoy working on problems at the intersection of computer science and economics, with a particular interest in algorithmic mechanism design, auctions, and online algorithms.

news

Sep 24, 2026	Our paper with Martin Bichler and Rilind Sahitaj, “On the Convergence of First-Order Methods in Signaling Games”, has been accepted to NeurIPS 2026!
Sep 19, 2026	Our paper with Georgios Amanatidis, Evangelos Markakis, Christodoulos Santorinaios, Guido Schäfer and Panagiotis Tsamopoulos, “Online Budget-Feasible Mechanism Design with Predictions “, has been accepted to Theoretical Computer Science!
Jun 15, 2026	I visited Bart de Keijzer and Carmine Ventre, at the Department of Informatics, King’s College London. During my visit, I gave a talk on the Price of Anarchy of autobidding agents with budgets. It was great fun!
Apr 20, 2026	I enjoyed visiting the AI and Economics research group at the University of Warsaw from April 15–17, where I gave a talk on learning-augmented mechanism design.
Apr 03, 2026	In the Summer 2026 semester, I am co-organizing a seminar on Learning in Games together with Martin Bichler.

selected publications

C11

On the Convergence of First-Order Methods in Signaling Games

Martin Bichler, Rilind Sahitaj, and Artem Tsikiridis

In 40th Annual Conference on Neural Information Processing Systems (NeurIPS), 2026

Bib

@inproceedings{bichler2026signaling,
  title = {On the Convergence of First-Order Methods in Signaling Games},
  author = {Bichler, Martin and Sahitaj, Rilind and Tsikiridis, Artem},
  booktitle = {40th Annual Conference on Neural Information Processing Systems (NeurIPS)},
  year = {2026},
}

Optimal Type-Dependent Liquid Welfare Guarantees for Autobidding Agents with Budgets

Riccardo Colini-Baldeschi, Sophie Klumper, Twan Kroll, Stefano Leonardi, Guido Schäfer, and Artem Tsikiridis

In 37th ACM-SIAM Symposium on Discrete Algorithms (SODA), 2026

Poster at ALGA 25.

DOI arXiv Bib Poster

@inproceedings{colinibaldeschi2026optimal,
  title = {Optimal Type-Dependent Liquid Welfare Guarantees for Autobidding Agents with Budgets},
  author = {Colini-Baldeschi, Riccardo and Klumper, Sophie and Kroll, Twan and Leonardi, Stefano and Sch{\"a}fer, Guido and Tsikiridis, Artem},
  booktitle = {37th ACM-SIAM Symposium on Discrete Algorithms (SODA)},
  pages = {1795--1823},
  year = {2026},
  doi = {10.1137/1.9781611978971.64},
}

Pandora’s Box Problem with Time Constraints

Georgios Amanatidis, Ben Berger, Tomer Ezra, Michal Feldman, Federico Fusco, Rebecca Reiffenhäuser, and Artem Tsikiridis

Artificial Intelligence, 2025

Talk at the Dutch Seminar on Optimization. Supersedes the WINE 2024 paper and this AAAI 2024 paper of Ben, Federico, Michal and Tomer.

DOI arXiv Bib Video

@article{amanatidis2025pandora,
  title = {Pandora's Box Problem with Time Constraints},
  author = {Amanatidis, Georgios and Berger, Ben and Ezra, Tomer and Feldman, Michal and Fusco, Federico and Reiffenh{\"a}user, Rebecca and Tsikiridis, Artem},
  journal = {Artificial Intelligence},
  volume = {349},
  pages = {104426},
  year = {2025},
  doi = {10.1016/j.artint.2025.104426},
}

To Trust or Not to Trust: Assignment Mechanisms with Predictions in the Private Graph Model

Riccardo Colini-Baldeschi, Sophie Klumper, Guido Schäfer, and Artem Tsikiridis

In 25th ACM Conference on Economics and Computation (EC), 2024

Talk at EC24. Appeared as a poster at the (virtual) 9th Marketplace Innovation Workshop.

DOI arXiv Bib Video Poster

@inproceedings{colinibaldeschi2024trust,
  title = {To Trust or Not to Trust: Assignment Mechanisms with Predictions in the Private Graph Model},
  author = {Colini-Baldeschi, Riccardo and Klumper, Sophie and Sch{\"a}fer, Guido and Tsikiridis, Artem},
  booktitle = {25th ACM Conference on Economics and Computation (EC)},
  pages = {1134--1154},
  year = {2024},
  doi = {10.1145/3670865.3673578},
}