There are many reasons why societies run elections. For example, a given society may need
to select its leader (eg, a president), members of a team may need to find an appropriate …

We evaluate 179 classifiers arising from 17 families (discriminant analysis, Bayesian, neural
networks, support vector machines, decision trees, rule-based classifiers, boosting, bagging …

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 …

From fundamental concepts and results to recent advances in computational social choice,
this open access book provides a thorough and in-depth look at multi-winner voting based …

We adopt a utilitarian perspective on social choice, assuming that agents have (possibly
latent) utility functions over some space of alternatives. For many reasons one might …

We study liquid democracy, a collective decision making paradigm that allows voters to
transitively delegate their votes, through an algorithmic lens. In our model, there are two …

After an introductory section, this article will focus on four questions: How should the Kyoto
School be defined? What is meant by its central philosophical concept of “absolute …

We consider voting under metric preferences: both voters and alternatives are associated
with points in a metric space, and each voter prefers alternatives that are closer to her to …

Social choice becomes easier on restricted preference domains such as single-peaked,
single-crossing, and Euclidean preferences. Many impossibility theorems disappear, the …

Social choice theory concerns the design and formal analysis of methods for aggregating
the preferences of multiple agents. Examples of such methods include voting procedures …