[Deadline extension] [CFP] KR/FLoC 2026 Workshop in Honor of Joe Halpern

[Esra Erdem]

*** Submission deadline: May 5, 2026 ***

Call for Papers

KR/FLoC 2026 Workshop in Honor of Joe Halpern

July 19, 2026

https://joefest26.github.io/

Joseph Y. Halpern was a pioneering computer scientist, logician, and philosopher. He made profound contributions in many areas, including reasoning about knowledge, causality, multi-agent and distributed systems, and more. He last attended KR 2024 in Hanoi, as an invited speaker for the panel “Great Ideas from KR: drawing on the past to shape the future”. He received a Ray Reiter Best Paper Prize at KR 2012, among many other high impact contributions. 

In his memory and his honor, KR/FLoC 2026 is planning a one day workshop on July 19, 2026. It will include both submitted contributions and invited talks.

Submission guidelines 

• We welcome papers on any topic related to Joe’s work and KR, including but not limited to, belief revision, causality, reasoning about knowledge and uncertainty, game theory and multi-agent systems.

• Submissions should take the form of extended abstracts (2-5 pages long, excluding references), formatted in one-column style, and include the names and affiliations of authors. 

• Extended abstracts must be submitted in PDF only, via the FLoC submission system: https://submissions.floc26.org/joefest/ .

• Reviewing will be single-blind. Accepted contributions will be listed on the workshop website, and presented at the workshop in person.

Important dates  (All deadlines are AoE – Anywhere on Earth (UTC-12))

• Paper submission deadline: May 5, 2026
• Notification of acceptance: May 19, 2026
• Early registration deadline: June 1, 2026
• Workshop: July 19, 2026

Organizers

• Sander Beckers, University College London, UK
• Hana Chockler, King’s College London, UK
• Esra Erdem, Sabancı University, Türkiye
• Ivan Geffner, Utrecht University, Netherlands
• Fangzhen Lin, Hong Kong University of Science and Technology, Hong Kong
• Evan Piermont, Royal Holloway, University of London, UK