The Twentieth Conference on Theoretical Aspects of Rationality and Knowledge (TARK 2025)——————————————————————————————————————————————

Submissions are invited to TARK 2025. The conference will be held from July 14 until July 16, 2025, at the Heinrich-Heine-Universität Düsseldorf in Germany.

Conference website: https://ccc.cs.uni-duesseldorf.de/tark-2025/.

Extended abstracts can be submitted at: https://easychair.org/conferences/?conf=tark2025.

Deadline for abstract registrations: March 21, 2025, anywhere on earth (extended from March 14).

Deadline for submissions: March 28, 2025, anywhere on earth (extended from March 21).

Scope and Mission: The mission of the TARK conferences is to bring together researchers from a wide variety of fields, including Computer Science, Artificial Intelligence, Game Theory, Decision Theory, Philosophy, Logic, Linguistics, and Cognitive Science, in order to further our understanding of interdisciplinary issues involving reasoning about rationality and knowledge. Previous conferences have been held bi-annually around the world. The information of all previous TARK conferences can be accessed at http://www.tark.org.

Topics of interest: These include, but are not limited to, semantic models for knowledge, belief, awareness and uncertainty, bounded rationality and resource-bounded reasoning, commonsense epistemic reasoning, epistemic logic, epistemic game theory, knowledge and action, applications of reasoning about knowledge and other mental states, belief revision, computational social choice, algorithmic game theory, and foundations of multi-agent systems.

Content: Strong preference will be given to papers whose topic is of interest to an interdisciplinary audience, and papers should be accessible to such an audience. Papers will be held to the usual high standards of research publications. In particular, they should:

1) contain enough information to enable the program committee to identify the main contribution of the work;

2) explain the significance of the work—its novelty and its practical or theoretical implications; and

3) include comparisons with and references to relevant literature.

Style: Extended abstracts should be no longer than 10 pages (excluding references). Optional technical details such as proofs may be included in an appendix. One author of each accepted paper will be expected to present the paper at the conference. Note that the 10 page limit is to ensure that the reviewers can read and express an opinion on the submission within a short time. Please ensure that the main text for the reviewers stays within this limit.

Format: To format your paper, please use the EPTCS LaTeX style from: http://style.eptcs.org/.

TARK reviewing is not double-anonymised, so author names can be included in the submission.

Invited Speakers:

• Kaushik Basu (Carl Marks Professor of International Studies, Cornell University, Ithaca, NY, USA)
• Elizabeth Maggie Penn (Political Science and Quantitative Theory and Methods, Emory University, Atlanta, GA, USA)
• Marcus Pivato (Centre d'Économie de la Sorbonne, Université Paris 1 Panthéon-Sorbonne, Paris, France)
• Tuomas Sandholm (Angel Jordan University Professor of Computer Science, Carnegie Mellon University, Pittsburgh, PA, USA)

Proceedings: There will be a proceedings for TARK 2025 at EPTCS (Electronic Proceedings in Theoretical Computer Science). The proceedings of previous TARK conferences can be accessed at http://www.tark.org/. The proceedings of TARK 2025 will also be open access and available online. (While economics papers follow the same submission guidelines for review purposes, authors can specify that only a short abstract should be included for the Proceedings with a link to a full working paper available online.)

Important deadlines:

• Short abstract registration: March 21
• Submission of extended abstract: March 28
• Notification of acceptance: April 25

Chairs:

• Conference chair: Joe Halpern, Cornell University
• Program chair: Adam Bjorndahl, Carnegie Mellon University
• Local organizing chair: Jörg Rothe, Heinrich-Heine-Universität Düsseldorf

Program Committee:

• Christian Bach, University of Reading
• Zoé Christoff, University of Groningen
• Franz Dietrich, Paris School of Economics & CNRS
• Hans van Ditmarsch, University of Toulouse, CNRS, IRIT
• Amanda Friedenberg, University of Michigan
• Malvin Gattinger, University of Amsterdam
• Sujata Ghosh, Indian Statistical Institute
• Nina Gierasimczuk, Technical University of Denmark
• Davide Grossi, University of Groningen
• Joseph Y. Halpern, Cornell University
• Aviad Heifetz, The Open University of Israel
• Willemien Kets, Utrecht University
• Jérôme Lang, CNRS, LAMSADE, Université Paris-Dauphine
• Larry Moss, Indiana University Bloomington
• Aybüke Özgün, University of Amsterdam
• Eric Pacuit, University of Maryland
• Andrés Perea, University Maastricht
• Olivier Roy, Universität Bayreuth
• Burkhard Schipper, University of California, Davis
• Sonja Smets, University of Amsterdam
• Elias Tsakas, Maastricht University
• Rineke Verbrugge, University of Groningen, Institute of Artificial Intelligence
• Francesca Zaffora Blando, Carnegie Mellon University