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Outer Diversity of Condorcet Domains
Piotr Faliszewski, Jan Jabrocki, Mateusz Słuszniak +3
A Condorcet domain is a set of rankings over a given candidate set, such that every election that consists only of (an odd number of) votes from the domain has a transitive majorit…
Agreement, Diversity, and Polarization Indices for Approval Elections
Piotr Faliszewski, Jitka Mertlová, Krzysztof Sornat +2
An index is a function that given an election outputs a value between 0 and 1, indicating the extent to which this election has a particular feature. We seek indices that capture a…
Outer Diversity of Structured Domains
Piotr Faliszewski, Krzysztof Sornat, Stanisław Szufa +1
An ordinal preference domain is a subset of preference orders that the voters are allowed to cast in an election. We introduce and study the notion of outer diversity of a domain a…
How Similar Are Two Elections?
Piotr Faliszewski, Piotr Skowron, Arkadii Slinko +3
We introduce and study isomorphic distances between ordinal elections (with the same numbers of candidates and voters). The main feature of these distances is that they are invaria…
Participatory Budgeting Project Strength via Candidate Control
Piotr Faliszewski, Łukasz Janeczko, Dušan Knop +4
We study the complexity of candidate control in participatory budgeting elections. The goal of constructive candidate control is to ensure that a given candidate wins by either add…