Embedded Files
ARIA SAFEGUARDED AI GRANT
24 April 2025ARIA SAFEGUARDED AI GRANT
I have been awarded a grant from the Advanced Research + Invention Agency (ARIA) within the Safeguarded AI programme. Our project is titled Aggregating Safety Preferences for AI Systems: A Social Choice Approach and team members include Niclas Boehmer (HPI Potsdam), Paul Goldberg (University of Oxford), Davide Grossi (University of Groningen), Jobst Heitzig (Potsdam Institute for Climate Impact Research and Zuse Institute Berlin), and Wes Holliday (UC Berkeley).
STRuctural DEMOCRACY FELLOWSHIP
19 March 2025STRuctural DEMOCRACY FELLOWSHIP
I have been awarded a Structural Democracy Fellowship, funded by the Crankstart Foundation and awarded via Moon Duchin's Data and Democracy Lab (also known as MGGG).
Special Issue PUBLISHED
1 February 2025Special Issue PUBLISHED
The Special Issue on Fair Public Decision Making: Allocating Budgets, Seats, and Probability of Social Choice and Welfare has been published and contains the following three papers:
M. Brill, J. Israel, E. Micha, and J. Peters. Individual Representation in Approval-Based Committee Voting. Social Choice and Welfare, 64(1–2):69–96, 2025. [link | pdf ]
N. Boehmer, M. Brill, and U. Schmidt-Kraepelin. Proportional Representation in Matching Markets: Selecting Multiple Matchings under Dichotomous Preferences. Social Choice and Welfare, 64(1–2):179–220, 2025. [ link | pdf ]
J. Israel and M. Brill. Dynamic Proportional Rankings. Social Choice and Welfare, 64(1–2):221–261, 2025. [ link | pdf ]
JANNIK wins VICTOR LESSER DISTINGUISHED Dissertation Award
19 December 2024JANNIK wins VICTOR LESSER DISTINGUISHED Dissertation Award
Jannik Peters has won the 2024 Victor Lesser Distinguished Dissertation Award! 🎉
PHD STUDENTS WANTED
25 September 2024PHD STUDENTS WANTED
We are looking for PhD candidates at the University of Warwick. The expected starting date is October 2025 or as soon as possible thereafter. For details, click here.
PhD Defense JANNIK
13 August 2024PhD Defense JANNIK
Jannik Peters successfully defended his PhD thesis. Congratulations!!! 🎉
Thanks to committee members Ioannis Caragiannis, Nisarg Shah, and Piotr Skowron!
Talk AT SSCW
3 July 2024Talk AT SSCW
I gave a talk at the 17th Meeting of the Society for Social Choice and Welfare. Slides available here.
Talk AT ICMS WORKSHOP
11 June 2024Talk AT ICMS WORKSHOP
I gave a talk at the ICMS workshop on Mathematics of Voting and Representation in Edinburgh. The slides are available here.
Talk AT ONLINE SCW Seminar
16 April 2024Talk AT ONLINE SCW Seminar
I gave a talk at the Online Social Choice and Welfare Seminar Series on the paper Robust and Verifiable Proportionality Axioms for Multiwinner Voting (joint work with Jannik Peters). The video is available here.
Talk AT EDDY CONFERENCE
12 April 2024Talk AT EDDY CONFERENCE
I gave a keynote talk at the 1st Conference of the European Network for Digital Democracy in Rotterdam.
Niclas wins VICTOR LESSER DISTINGUISHED Dissertation Award
2 April 2024Niclas wins VICTOR LESSER DISTINGUISHED Dissertation Award
Congratulations to Niclas for winning the 2023 Victor Lesser Distinguished Dissertation Award! He will present his thesis at AAMAS 2024.
Special Issue PUBLISHED
6 March 2024Special Issue PUBLISHED
The Special Issue Mathematical Optimization for Fair Social Decisions: A Tribute to Michel Balinski of Mathematical Programming has been published and contains the following three papers:
Markus Brill, Rupert Freeman, Svante Janson and Martin Lackner. Phragmén’s voting methods and justified representation. Mathematical Programming, 203(1–2):47–76, 2024. [ link | pdf ]
M. Brill, P. Gölz, D. Peters, U. Schmidt-Kraepelin, and K. Wilker. Approval-based apportionment. Mathematical Programming, 203(1–2):77–105 2024. [ link | pdf ]
L. Sánchez-Fernández, N. Fernández García, J. A. Fisteus, and M. Brill. The Maximin Support Method: An Extension of the D’Hondt Method to Approval-Based Multiwinner Elections. Mathematical Programming, 203(1–2):107–134, 2024. [ link | pdf ]
PhD Defense JONAS
19 December 2023PhD Defense JONAS
Jonas Israel successfully defended his PhD thesis. Congratulations!!! 🎉
Thanks to committee members Jerome Lang, Piotr Skowron, and Julia Stoyanovich!
3 papers accepted at AAAI 2024
10 December 20233 papers accepted at AAAI 2024
The following papers have been accepted at AAAI 2024:
N. Boehmer, M. Brill, A. Cevallos, J. Gehrlein, L. Sánchez-Fernández, and U. Schmidt-Kraepelin. Approval-based committee voting in practice: A case study of (over-)representation in the Polkadot blockchain. [ arxiv ]
M. Brill and J. Peters. Completing Priceable Committees: Utilitarian and Representation Guarantees. [ arxiv ]
A. Imber and J. Israel and M. Brill and H. Shachnai and B. Kimelfeld. Spatial Voting with Incomplete Voter Information. [ arxiv ]
PHD STUDENTS WANTED
13 November 2023PHD STUDENTS WANTED
We are looking for PhD candidates at the University of Warwick. For details, click here.
Talk In Karlsruhe
12 October 2023Talk In Karlsruhe
I gave a talk at the Conference on Voting Theory and Preference Aggregation in honor of Klaus Nehring’s 65th birthday.
Ulrike wins EurAI Dissertation Award
15 September 2023Ulrike wins EurAI Dissertation Award
Congratulations to Ulrike for winning the 2022 dissertation award by the European Association for Artificial Intelligence (EurAI)! She will present her thesis at ECAI 2023.
PhD Defense Niclas
26 July 2023PhD Defense Niclas
Niclas Boehmer successfully defended his PhD thesis. Congratulations!!! 🎉
Thanks to committee members Piotr Faliszewski, Jerome Lang, and Kate Larson!
WorkSHOP AT TU BERLIN
14 July 2023WorkSHOP AT TU BERLIN
I'm organizing a workshop on Computational Social Choice. The workshop will take place at TU Berlin on Thursday, July 27th, 2023. More information here.
Paper ACCEPTED AT EC
1 May 2023Paper ACCEPTED AT EC
M. Brill and J. Peters. Robust and Verifiable Proportionality Axioms for Multiwinner Voting. Proceedings of the 24th ACM Conference on Economics and Computation (ACM-EC), 2023. Forthcoming. [ arxiv ]
Paper ACCEPTED AT IJCAI
19 April 2023Paper ACCEPTED AT IJCAI
M. Brill, E. Markakis, G. Papasotiropoulos, and J. Peters. Proportionality Guarantees in Elections with Interdependent Issues. Proceedings of the 32nd International Joint Conference on Artificial Intelligence (IJCAI), 2023. Forthcoming.
PHD STUDENT WANTED
13 April 2023PHD STUDENT WANTED
I'm looking for a PhD candidate at the University of Warwick. For details, click here.
paper accepted at MATHEMATICAL PROGRAMMING
6 March 2023paper accepted at MATHEMATICAL PROGRAMMING
The following paper has been accepted for the Special Issue of Mathematical Programming, Series B, on Mathematical Optimization and Fair Social Decisions
PhD Defense Ulrike
30 November 2022PhD Defense Ulrike
Ulrike Schmidt-Kraepelin successfully defended her PhD thesis. Congratulations!!! 🎉
Thanks to committee members Felix Brandt, Piotr Faliszewski, and David Pennock!
4 papers accepted at AAAI 2023
21 November 20224 papers accepted at AAAI 2023
The following four papers with ALGO members as coauthors have been accepted at AAAI 2023:
Markus Brill, Stefan Forster, Martin Lackner, Jan Maly, and Jannik Peters.
Proportionality in Approval-Based Participatory BudgetingMarkus Brill, Hayrullah Dindar, Jonas Israel, Jérôme Lang, Jannik Peters, and Ulrike Schmidt-Kraepelin.
Multiwinner Voting with Possibly Unavailable CandidatesXinhang Lu, Jannik Peters, Haris Aziz, Xiaohui Bei, and Warut Suksompong.
Approval-Based Voting with Mixed GoodsThéo Delemazure, Tom Demeulemeester, Manuel Eberl, Jonas Israel, and Patrick Lederer.
Strategyproofness and Proportionality in Party-Approval Multiwinner Elections
Associated group member Niclas Boehmer is involved in further 3 papers.
PHD STUDENTS WANTED
4 October 2022PHD STUDENTS WANTED
Together with my new colleagues, I'm looking for PhD candidates at the University of Warwick. For details, click here.
PhD PRize FOr ULRIKE
30 September 2022PhD PRize FOr ULRIKE
Congratulations to Ulrike Schmidt-Kraepelin for being awarded the Dimitris N. Chorafas prize for her PhD work!
Berlin ➡️ Warwick
19 September 2022Berlin ➡️ Warwick
I moved to the University of Warwick (UK). My new website is here. The rest of the group stays in Berlin.
DAGSTUHL SEMINAR "ALGORITHMS FOR PARTICIPATORY DEMOCRACY"
11 July 2022DAGSTUHL SEMINAR "ALGORITHMS FOR PARTICIPATORY DEMOCRACY"
I co-organized the Dagstuhl Seminar "Algorithms for Participatory Democracy". Ulrike Schmidt-Kraepelin gave a talk.
Invited Talk AT Hi!PARIS SYmposium
13 June 2022Invited Talk AT Hi!PARIS SYmposium
I gave an invited talk at the Hi! PARIS Symposium on AI and Society (Paris, 8-10 June 2022).
2 papers accepted at MATHEMATICAL PROGRAMMING
10 June 20222 papers accepted at MATHEMATICAL PROGRAMMING
The following papers have been accepted for the Special Issue of Mathematical Programming, Series B, on Mathematical Optimization and Fair Social Decisions
L. Sánchez-Fernández, N. Fernández García, J. A. Fisteus, and M. Brill. The Maximin Support Method: An Extension of the D’Hondt Method to Approval-Based Multiwinner Elections. [ link | pdf ]
M. Brill, P. Gölz, D. Peters, U. Schmidt-Kraepelin, and K. Wilker. Approval-based apportionment. [ link | pdf ]
3 papers accepted at AAMAS 2022
19 December 20213 papers accepted at AAMAS 2022
The following three papers with ALGO members as (co)authors have been accepted at AAMAS 2022:
Markus Brill, Niclas Boehmer, Ulrike Schmidt-Kraepelin. Proportional Representation in Matching Markets: Selecting Multiple Matchings under Dichotomous Preferences. [ arxiv ]
Ágnes Cseh, Jannik Peters. Three-Dimensional Popular Matching with Cyclic Preferences. [ arxiv ]
Ágnes Cseh, Tobias Friedrich, Jannik Peters. Pareto optimal and popular house allocation with lower and upper quotas. [ arxiv ]
5 papers accepted at AAAI 2022
1 December 20215 papers accepted at AAAI 2022
The following five papers with ALGO members as (co)authors have been accepted at AAAI 2022:
Markus Brill, Théo Delemazure, Anne-Marie George, Martin Lackner, and Ulrike Schmidt-Kraepelin.
Liquid Democracy with Ranked Delegations. [pdf]Markus Brill, Jonas Israel, Evi Micha, and Jannik Peters.
Individual Representation in Approval-Based Committee Voting.Edith Elkind, Piotr Faliszewski, Ayumi Igarashi, Pasin Manurangsi, Ulrike Schmidt-Kraepelin, and Warut Suksompong. The Price of Justified Representation.
Aviram Imber, Jonas Israel, Markus Brill, and Benny Kimelfeld.
Approval-Based Committee Voting under Incomplete Information. [arxiv]Jannik Peters. Online Elicitation of Necessarily Optimal Matchings.
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