A committee selection rule (or, multiwinner voting rule) is a mapping that takes a collection of
strict preference rankings and a positive integer k as input, and outputs one or more subsets …

Introduction Coalitions are a central part of economic, political, and social life, and coalition
formation has been studied extensively within the mathematical social sciences. Agents (be …

We generalize the classic problem of fairly allocating indivisible goods to the problem of fair
public decision making, in which a decision must be made on several social issues …

We consider the problem of fairly allocating indivisible public goods. We model the public
goods as elements with feasibility constraints on what subsets of elements can be chosen …

Voters have strong incentives to increase their influence by trading votes, acquiring others'
votes when preferences are strong in exchange for giving votes away when preferences are …

This is Chapter 17 of the forthcoming Handbook of Computational Social Choice. It covers
the axiomatic foundations of judgment aggregation, specific aggregation procedures …

1 Her work has been supported in part by an NRW grant for gender-sensitive universities
supporting her as a junior professor for Computational Social Choice and by the project …

We study the problem of fair sequential decision making given voter preferences. In each
round, a decision rule must choose a decision from a set of alternatives where each voter …

Interactive Democracy is an umbrella term that encompasses a variety of approaches to
make collective decision making processes more engaging and responsive. A common goal …

In this paper we introduce a new voting formalism to support long-term collective decision
making: perpetual voting rules. These are voting rules that take the history of previous …