We initiate the study of external manipulations in Stable Marriage by considering several
manipulative actions as well as several manipulation goals. For instance, one goal is to …

We investigate the complexity of several manipulation and control problems under
numerous prevalent approval-based multiwinner voting rules. Particularly, the rules we …

Contributing to the toolbox for interpreting election results, we evaluate the robustness of
election winners to random noise. We compare the robustness of different voting rules and …

We study the NP-hard Fair Connected Districting problem recently proposed by Stoica et
al.[AAMAS 2020]: Partition a vertex-colored graph into k connected components …

Collective decision making problems capture situations where the preferences of agents
need to be aggregated into a compromise solution. This thesis focuses on two such …

Liquid democracy is a decision-making paradigm in which each agent can either vote
directly for some alternative or (transitively) delegate its vote to another agent. To mitigate …

Abstract Information diffusion in social networks is a well-studied concept in social choice
theory. We propose the study of the diffusion of two secrets in a heterogeneous environment …

The election, a cornerstone of democracy, is one of the best-recognizable symbols of
democratic governance. Voters' confidence in elections is essential, and these days, we can …

Abstract We consider GROUP CONTROL BY ADDING INDIVIDUALS (GCAI) in the setting of
group identification for two procedural rules—the consensus-start-respecting rule and the …

This paper studies the complexity of two microbribery problems under the model of group
identification. In these problems, we are given a subset of distinguished individuals, and the …