Location: Room “San Francesco” at Auditorium Antonianum
14:00–15:30: Session 1
Daniel Halpern, Xinyu Liu, Evi Micha, Yu Peng Ng, and Warut Suksompong: Proportionality in Ranking Compression (12 min)
Haris Aziz, Patrick Lederer, and Rayan Sharara: Proportional Rank Aggregation with Generalized Kemeny Utilities (12 min)
Luca Kreisel, Niclas Boehmer, and Jannik Peters: Explanation Systems for Approval-Based Multiwinner Voting (12 min)
Soham De, Lodewijk Gelauff, Ashish Goel, Smitha Milli, Ariel D Procaccia, and Alice Siu: Question the Questions: Auditing Representation in Online Deliberative Processes (12 min)
Yusuf Hakan Kalaycı and Evi Micha: Temporal Panel Selection in Ongoing Citizens’ Assemblies (12 min)
Gregory Kehne: Proportionality from Sampled Approvals (5 min)
Davide Grossi, Andreas Nitsche, Georgios Papasotiropoulos, Oskar Skibski, Piotr Skowron, and Tomasz Wąs: Power in Liquid Democracy: A Network Centrality Approach (5 min)
Parinaz Naghizadeh and Jingyan Wang: The Double-Edged Sword of Information: Revealed versus Hidden Lotteries in School Choice (5 min)
Bhaskar Ray Chaudhury and Rohan Jayesh Shah: On the Existence of Simple Iterative Procedures for EFX Allocations (5 min)
Paul Gölz, Jan Maly, Ulrike Schmidt-Kraepelin, Markus Utke, and Philipp C. Verpoort: City Sampling for Citizens' Assemblies (5 min)
15:30–16:00: Coffee Break
16:00–17:30: Session 2
Chris Dong, Sonja Kraiczy, Rohit Vasishta, Markus Brill, Wesley H. Holliday, and Niclas Boehmer: Where Should Society Draw the Line? A Social Choice Approach to Collective Consent (12 min)
Luise Ge, Daniel Halpern, Gregory Kehne, and Yevgeniy Vorobeychik: Linear Social Choice with Few Queries: A Moment-Based Approach (12 min)
Carmel Baharav, Niclas Boehmer, Bailey Flanigan, and Maximilian T. Wittmann: The End Justifies the Mean: A Linear Ranking Rule for Proportional Sequential Decisions (12 min)
Federico Echenique, Alireza Fallah, Baihe Huang, and Michael I. Jordan: Response Time Enhances Alignment with Heterogeneous Preferences (12 min)
David Liu, Kiran Tomlinson, Jon Kleinberg, and Johan Ugander: Forecasting Instant Runoff Voting from Polls (12 min)
Invited Talk: Ioannis Caragiannis: Quantile Agent Utility and Implications to Randomized Social Choice (30 min)
17:30–18:30: Poster Session (Location: Corridor outside of “San Francesco” room)
Join us for the Third Workshop on New Directions in Social Choice, co-located with the ACM Conference on Economics and Computation (EC'26) at the Sapienza University of Rome on Monday, July 6, 2026, in the afternoon!
This workshop aims to bring together researchers working on topics related to voting and social choice. With a focus on recent developments, new application domains, new analysis frameworks, and the intersection with artificial intelligence, the workshop will provide a platform for discussing the latest breakthroughs and charting directions for future work in the field.
Submission Server -- We are using a self-hosted version of HotCRP. If you are experiencing issues, please contact Dominik Peters <mail@dominik-peters.de>.
Social choice theory has been studying collective decision-making since the 1950s. Recent progress has deepened our understanding along several axes of innovation, and this workshop seeks to explore these exciting frontiers:
New Application Domains: Social choice theory is being applied to an expanding range of new areas. Theoretical progress (e.g., voting in combinatorial domains) has fueled new applications (e.g., blockchain consensus and participatory budgeting).
New Analysis Frameworks: The field has benefited from new perspectives on well-known questions through innovative analysis frameworks. Examples include distortion in metric spaces, best-of-both-world guarantees, and forms of beyond-worst-case analysis.
Accounting for Hard-to-Model Facets: Social choice theory is making strides in incoroporating complex, real-world aspects of decision-making such as such as deliberation, preference learning, strategic behavior under uncertainty, and the impact of information structures.
Social Choice for Artificial Intelligence: There is a growing need to apply social choice principles to the development and governance of AI systems. This includes aggregating diverse human preferences for AI alignment, social choice approaches to fairness in algorithmic decision-making, and designing mechanisms for collective AI control.
The purpose of this workshop is to highlight recent breakthroughs in these directions, chart avenues for future work, and bring together the social choice community at EC.
This half-day workshop will take place on Monday, July 6, at the EC'26 conference (which runs July 6-10), in the afternoon. The workshop will feature contributed and invited talks and a joint poster session with other EC'26 workshops.
We solicit paper contributions on the topics of this workshop. We encourage submissions that explore any of the themes listed above, as well as other novel directions in computational social choice. We encourage authors to submit papers using the EC style files (zip), but other formats are also acceptable. Submissions will be lightly reviewed, and we prefer focused and short versions of papers. We will accept papers both as poster and as oral presentations.
This is a non-archival workshop and we welcome papers that have been recently published or that are currently under review elsewhere. Papers accepted at EC'26 should not be submitted. Submissions need not be anonymized.
Important Dates:
Submission Deadline: Wednesday, May 20, 23:59 AoE (Anywhere on Earth) – two days after the EC decision date
Notification to Authors: Wednesday, June 4.
Workshop Date: Monday, July 6, 2026, 14:00–18:30.
Contact: ec26workshop@comsocseminar.org
Workshop organizers:
Paul Gölz, Cornell University
Dominik Peters, CNRS