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ACCORD SIGNED

Algorithms for Complex Collective Decisions on Structured Domains

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Project "ACCORD" data sheet

The following table provides information about the project.

Coordinator
THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD 

Organization address
address: WELLINGTON SQUARE UNIVERSITY OFFICES
city: OXFORD
postcode: OX1 2JD
website: www.ox.ac.uk

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country United Kingdom [UK]
 Total cost 1˙395˙933 €
 EC max contribution 1˙395˙933 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2014-STG
 Funding Scheme ERC-STG
 Starting year 2015
 Duration (year-month-day) from 2015-07-01   to  2020-06-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD UK (OXFORD) coordinator 1˙395˙933.00

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 Project objective

Algorithms for Complex Collective Decisions on Structured Domains. The aim of this proposal is to substantially advance the field of Computational Social Choice, by developing new tools and methodologies that can be used for making complex group decisions in rich and structured environments. We consider settings where each member of a decision-making body has preferences over a finite set of alternatives, and the goal is to synthesise a collective preference over these alternatives, which may take the form of a partial order over the set of alternatives with a predefined structure: examples include selecting a fixed-size set of alternatives, a ranking of the alternatives, a winner and up to two runner-ups, etc. We will formulate desiderata that apply to such preference aggregation procedures, design specific procedures that satisfy as many of these desiderata as possible, and develop efficient algorithms for computing them. As the latter step may be infeasible on general preference domains, we will focus on identifying the least restrictive domains that enable efficient computation, and use real-life preference data to verify whether the associated restrictions are likely to be satisfied in realistic preference aggregation scenarios. Also, we will determine whether our preference aggregation procedures are computationally resistant to malicious behavior. To lower the cognitive burden on the decision-makers, we will extend our procedures to accept partial rankings as inputs. Finally, to further contribute towards bridging the gap between theory and practice of collective decision making, we will provide open-source software implementations of our procedures, and reach out to the potential users to obtain feedback on their practical applicability.

 Publications

year authors and title journal last update
List of publications.
2017 Dominik Peters
Condorcet\'s Principle and the Preference Reversal Paradox
published pages: 455-469, ISSN: 2075-2180, DOI: 10.4204/EPTCS.251.34
Electronic Proceedings in Theoretical Computer Science 251 2020-03-05
2019 Alexandros A. Voudouris
A note on the efficiency of position mechanisms with budget constraints
published pages: 28-33, ISSN: 0020-0190, DOI: 10.1016/j.ipl.2018.11.004
Information Processing Letters 143 2020-03-05
2019 Daan Bloembergen, Davide Grossi, Martin Lackner
On Rational Delegations in Liquid Democracy
published pages: 1796-1803, ISSN: 2374-3468, DOI: 10.1609/aaai.v33i01.33011796
Proceedings of the AAAI Conference on Artificial Intelligence 33 2020-03-05
2019 Ioannis Caragiannis, Xenophon Chatzigeorgiou, George A. Krimpas, Alexandros A. Voudouris
Optimizing positional scoring rules for rank aggregation
published pages: 58-77, ISSN: 0004-3702, DOI: 10.1016/j.artint.2018.11.001
Artificial Intelligence 267 2020-03-05
2018 Florian Brandl, Dominik Peters
An axiomatic characterization of the Borda mean rule
published pages: , ISSN: 0176-1714, DOI:
Social Choice and Welfare 52 2020-03-05
2019 Ayumi Igarashi, Dominik Peters
Pareto-Optimal Allocation of Indivisible Goods with Connectivity Constraints
published pages: 2045-2052, ISSN: 2374-3468, DOI: 10.1609/aaai.v33i01.33012045
Proceedings of the AAAI Conference on Artificial Intelligence 33 2020-03-05
2019 Manel Ayadi, Nahla Ben Amor, Jérôme Lang, Dominik Peters
Single Transferable Vote: Incomplete Knowledge and Communication Issues
published pages: , ISSN: , DOI:
AAMAS\'19 2020-03-05
2019 Robert Bredereck, Edith Elkind, Ayumi Igarashi
Hedonic Diversity Games
published pages: , ISSN: , DOI:
AAMAS\'19 2020-03-05
2018 Andreas Darmann, Edith Elkind, Sascha Kurz, Jérôme Lang, Joachim Schauer, Gerhard Woeginger
Group activity selection problem with approval preferences
published pages: 767-796, ISSN: 0020-7276, DOI: 10.1007/s00182-017-0596-4
International Journal of Game Theory 47/3 2020-03-05
2017 Edith Elkind, Piotr Faliszewski, Piotr Skowron, Arkadii Slinko
Properties of multiwinner voting rules
published pages: , ISSN: 0176-1714, DOI: 10.1007/s00355-017-1026-z
Social Choice and Welfare 2019-05-29
2017 Piotr Skowron, Edith Elkind
Social Choice Under Metric Preferences: Scoring Rules and STV
published pages: , ISSN: , DOI:
31st AAAI Conference on Artificial Intelligence 2019-05-29
2016 Edith Elkind, Martin Lackner, Dominik Peters
Preference Restrictions in Computational Social Choice: Recent Progress
published pages: , ISSN: , DOI:
Twenty-Fifth International Joint Conference on Artificial Intelligence 2019-05-29
2017 Dominik Peters
Recognising Multidimensional Euclidean Preferences
published pages: , ISSN: , DOI:
31st AAAI Conference on Artificial Intelligence 2019-05-29
2016 Ayumi Igarashi, Edith Elkind
Hedonic Games with Graph-restricted Communication
published pages: , ISSN: , DOI:
2016 International Conference on Autonomous Agents & Multiagent Systems 2019-05-29
2018 Robert Bredereck, Piotr Faliszewski, Ayumi Igarashi, Martin Lackner, Piotr Skowron
Multiwinner Elections With Diversity Constraints
published pages: 933-940, ISSN: , DOI:
Thirty-Second AAAI Conference on Artificial Intelligence 2019-05-29
2017 Svetlana Obraztsova, Maria Polukarov, Zinovi Rabinovich and Edith Elkind
Doodle Poll Games
published pages: , ISSN: , DOI:
2017 International Conference on Autonomous Agents & Multiagent Systems 2019-05-29
2016 Piotr Faliszewski, Piotr Skowron, Arkadii Slinko, Nimrod Talmon
Committee Scoring Rules: Axiomatic Classification and Hierarchy
published pages: , ISSN: , DOI:
Twenty-Fifth International Joint Conference on Artificial Intelligence 2019-05-29
2017 Dominik Peters
Precise Complexity of the Core in Dichotomous and Additive Hedonic Games
published pages: 214-227, ISSN: , DOI: 10.1007/978-3-319-67504-6_15
Algorithmic Decision Theory. ADT 2017 2019-05-29
2016 Markus Brill, Rupert Freeman, Vincent Conitzer
Computing Possible and Necessary Equilibrium Actions (and Bipartisan Set Winners)
published pages: , ISSN: , DOI:
30th AAAI Conference on Artificial Intelligence 2019-05-29
2016 Piotr Skowron, Piotr Faliszewski, Jérôme Lang
Finding a collective set of items: From proportional multirepresentation to group recommendation
published pages: , ISSN: 0004-3702, DOI: 10.1016/j.artint.2016.09.003
Artificial Intelligence Journal 2019-05-29
2018 Dominik Peters
Single-Peakedness and Total Unimodularity: New Polynomial-Time Algorithms for Multi-Winner Elections
published pages: , ISSN: , DOI:
Thirty-Second AAAI Conference on Artificial Intelligence 2019-05-29
2015 Haris Aziz, Markus Brill, Felix Fischer, Paul Harrenstein, Jerome Lang and Hans Georg Seedig
Possible and Necessary Winners of Partial Tournaments
published pages: , ISSN: 1076-9757, DOI: 10.1613/jair.4856
Journal of AI Research 2019-05-29
2017 Piotr Skowron
FPT approximation schemes for maximizing submodular functions
published pages: 65-78, ISSN: 0890-5401, DOI: 10.1016/j.ic.2017.10.002
Information and Computation 257 2019-05-29
2017 Haris Aziz, Markus Brill, Vincent Conitzer, Edith Elkind, Rupert Freeman, Toby Walsh
Justified representation in approval-based committee voting
published pages: , ISSN: 0176-1714, DOI: 10.1007/s00355-016-1019-3
Social Choice and Welfare 2019-05-29
2017 Piotr Faliszewski, Piotr Skowron, Nimrod Talmon
Bribery as a Measure of Candidate Success: Complexity Results for Approval-Based Multiwinner Rules
published pages: , ISSN: , DOI:
2017 International Conference on Autonomous Agents & Multiagent Systems 2019-05-29
2016 Tomasz P. Michalak, Talal Rahwan, Edith Elkind, Michael Wooldridge, Nicholas R. Jennings
A hybrid exact algorithm for complete set partitioning
published pages: , ISSN: 0004-3702, DOI: 10.1016/j.artint.2015.09.006
Artificial Intelligence Journal 2019-05-29
2017 Piotr Skowron, Krzysztof Rzadca, Anwitaman Datta
Cooperation and Competition When Bidding for Complex Projects: Centralized and Decentralized Perspectives
published pages: 17-23, ISSN: 1541-1672, DOI: 10.1109/MIS.2017.4
IEEE Intelligent Systems 32/1 2019-05-29
2018 Markus Brill, Jean-François Laslier, Piotr Skowron
Multiwinner approval rules as apportionment methods
published pages: 95162981877551, ISSN: 0951-6298, DOI: 10.1177/0951629818775518
Journal of Theoretical Politics 2019-05-29
2017 Markus Brill, Rupert Freeman, Svante Janson, Martin Lackner
Phragmen’s Voting Methods and Justified Representation
published pages: , ISSN: , DOI:
31st AAAI Conference on Artificial Intelligence 2019-05-29
2017 Ayumi Igarashi, Dominik Peters, Edith Elkind
Group Activity Selection on Social Networks
published pages: , ISSN: , DOI:
31st AAAI Conference on Artificial Intelligence 2019-05-29
2016 Vincent Conitzer, Rupert Freeman, Markus Brill, Yuqian Li
Rules for Choosing Societal Tradeoffs
published pages: , ISSN: , DOI:
30th AAAI Conference on Artificial Intelligence 2019-05-29
2016 Markus Brill, Vincent Conitzer, Rupert Freeman, Nisarg Shah
False-Name-Proof Recommendations in Social Networks
published pages: , ISSN: , DOI:
2016 International Conference on Autonomous Agents & Multiagent Systems 2019-05-29
2017 Gábor Erdélyi, Martin Lackner, Andreas Pfandler
Computational Aspects of Nearly Single-Peaked Electorates
published pages: , ISSN: 1076-9757, DOI: 10.1613/jair.5210
Journal of AI Research 2019-05-29
2018 Haris Aziz, Edith Elkind, Shenwei Huang, Martin Lackner, Luis Sanchez-Fernandez, Piotr Skowron
On the Complexity of Extended and Proportional Justified Representation
published pages: 902-909, ISSN: , DOI:
Thirty-Second AAAI Conference on Artificial Intelligence 2019-05-29
2017 Markus Brill, Jean-Francois Laslier, Piotr Skowron
Multiwinner Approval Rules as Apportionment Methods
published pages: , ISSN: , DOI:
31st AAAI Conference on Artificial Intelligence 2019-05-29
2018 Piotr Faliszewski, Martin Lackner, Dominik Peters, Nimrod Talmon
Effective Heuristics for Committee Scoring Rules
published pages: , ISSN: , DOI:
Thirty-Second AAAI Conference on Artificial Intelligence 2019-05-29
2018 Florian Jaeckle, Dominik Peters, Edith Elkind
On Recognising Nearly Single-Crossing Preferences
published pages: , ISSN: , DOI:
Thirty-Second AAAI Conference on Artificial Intelligence 2019-05-29
2018 Ayumi Igarashi, Rani Izsak, Edith Elkind
Cooperative Games With Bounded Dependency Degree
published pages: , ISSN: , DOI:
Thirty-Second AAAI Conference on Artificial Intelligence 2019-05-29
2016 Piotr Skowron
FPT Approximation Schemes for Maximizing Submodular Functions
published pages: , ISSN: , DOI: 10.1007/978-3-662-54110-4_23
Web and Internet Economics - 12th International Conference 2019-05-29
2016 Svetlana Obraztsova, Zinovi Rabinovich, Edith Elkind, Maria Polukarov, Nicholas R. Jennings
Trembling Hand Equilibria of Plurality Voting
published pages: , ISSN: , DOI:
Twenty-Fifth International Joint Conference on Artificial Intelligence 2019-05-29
2016 Felix Brandt, Markus Brill, Hans Georg Seedig, Warut Suksompong
On the structure of stable tournament solutions
published pages: , ISSN: 0938-2259, DOI: 10.1007/s00199-016-1024-x
Economic Theory 2019-05-29
2016 Felix Brandt, Markus Brill
Computing dominance-based solution concepts
published pages: , ISSN: 2167-8375, DOI: 10.1145/2963093
ACM Transactions on Economics and Computation (TEAC) 2019-05-29
2016 Edith Elkind, Angelo Fanelli, Michele Flammini
Price of Pareto Optimality in Hedonic Games
published pages: , ISSN: , DOI:
Thirtieth AAAI Conference on Artificial Intelligence 2019-05-29
2018 Piotr Faliszewski, Piotr Skowron, Arkadii Slinko, Nimrod Talmon
Multiwinner analogues of the plurality rule: axiomatic and algorithmic perspectives
published pages: , ISSN: 0176-1714, DOI: 10.1007/s00355-018-1126-4
Social Choice and Welfare 2019-05-29
2016 Edith Elkind, Evangelos Markakis, Svetlana Obraztsova, Piotr Skowron
Complexity of Finding Equilibria of Plurality Voting Under Structured Preferences
published pages: , ISSN: , DOI:
2016 International Conference on Autonomous Agents & Multiagent Systems 2019-05-29
2017 Edith Elkind, Martin Lackner, Dominik Peters
Structured preferences
published pages: , ISSN: , DOI:
Trends in Computational Social Choice 2019-05-29
2017 Marie-Louise Lackner, Martin Lackner
On the likelihood of single-peaked preferences
published pages: 717-745, ISSN: 0176-1714, DOI: 10.1007/s00355-017-1033-0
Social Choice and Welfare 48/4 2019-05-29
2016 Markus Brill, Edith Elkind, Ulle Endriss, Umberto Grandi
Pairwise Diffusion of Preference Rankings in Social Networks
published pages: , ISSN: , DOI:
Twenty-Fifth International Joint Conference on Artificial Intelligence 2019-05-29
2015 Edith Elkind, Anisse Ismaili
OWA-Based Extensions of the Chamberlin–Courant Rule
published pages: , ISSN: , DOI: 10.1007/978-3-319-23114-3_29
4th International Conference on Algorithmic DecisionTheory 2019-05-29
2017 Edith Elkind, Piotr Faliszewski, Jean-Francois Laslier, Piotr Skowron, Arkadii Slinko, Nimrod Talmon
What Do Multiwinner Voting Rules Do? An Experiment Over the Two-Dimensional Euclidean Domain
published pages: , ISSN: , DOI:
31st AAAI Conference on Artificial Intelligence 2019-05-29
2017 Luis Sanchez-Fernandez, Edith Elkind, Martin Lackner, Norberto Fernandez, Jesus A. Fisteus, Pablo Basanta Val, Piotr Skowron
Proportional Justified Representation
published pages: , ISSN: , DOI:
31st AAAI Conference on Artificial Intelligence 2019-05-29
2017 Christian Geist, Dominik Peters
Computer-aided Methods for Social Choice Theory
published pages: , ISSN: , DOI:
Trends in Computational Social Choice 2019-05-29
2016 Chrystalla Pavlou, Edith Elkind
Manipulating Citation Indices in a Social Context
published pages: , ISSN: , DOI:
2016 International Conference on Autonomous Agents & Multiagent Systems 2019-05-29
2017 Dominik Peters, Martin Lackner
Preferences Single-Peaked on a Circle
published pages: , ISSN: , DOI:
31st AAAI Conference on Artificial Intelligence 2019-05-29
2017 Edith Elkind
Justified Representation in Multiwinner Voting: Axioms and Algorithms
published pages: 1-10, ISSN: , DOI: 10.4230/LIPIcs.FSTTCS.2017.1
37th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2017) annual 2019-05-29
2016 Dominik Peters, Edith Elkind
Preferences Single-Peaked on Nice Trees
published pages: , ISSN: , DOI:
Thirtieth AAAI Conference on Artificial Intelligence 2019-05-29
2017 Ayumi Igarashi, Edith Elkind and Robert Bredereck
On Parameterized Complexity of Group Activity Selection Problems on Social Networks
published pages: , ISSN: , DOI:
2017 International Conference on Autonomous Agents & Multiagent Systems 2019-05-29
2017 Theresa Csar, Martin Lackner, Reinhard Pichler, Emanuel Sallinger
Winner Determination in Huge Elections with MapReduce
published pages: , ISSN: , DOI:
31st AAAI Conference on Artificial Intelligence 2019-05-29

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