We consider approval-based committee voting, ie the setting where each voter approves a
subset of candidates, and these votes are then used to select a fixed-size set of winners …

This paper is an axiomatic study of consistent approval-based multi-winner rules, ie, voting
rules that select a fixed-size group of candidates based on approval ballots. We introduce …

Approval voting (AV) system is well suited to elect a single winner, which almost all the
literature on AV since the 1970s has addressed. Satisfaction approval voting (SAV) works as …

This paper presents a framework for evaluating the impact of languages in multilingual
societies. We consider several ranking methods based on various principles, including …

The modern era of wine journalism has provided abundant information about wines and
widespread use of numerical rating systems. A tiny difference, especially at the top of the …

Scoring rules are widely used to rank athletes in sports and candidates in elections. Each
position in each individual ranking is worth a certain number of points; the total sum of points …

We report on two field experiments on Approval Voting conducted during actual state and
federal elections in Germany. Voters provided approval ballots both for named district …

We study the problem of sharing the revenues from broadcasting sports leagues among
participating clubs. First, we characterize the set of rules satisfying two basic axioms …

In approval-based committee (ABC) elections, the goal is to elect a fixed size subset of the
candidates, a so-called committee, based on the voters' approval ballots over the …

We develop a model for the aggregation of preferences that do not need to be either
complete or transitive. Our focus is on the normative characterisation of aggregation rules …