no code implementations • 24 Feb 2022 • Jiehua Chen, Sanjukta Roy
Answering an open question by Betzler et al. [Betzler et al., JAIR'13], we resolve the parameterized complexity of the multi-winner determination problem under two famous representation voting rules: the Chamberlin-Courant (in short CC) rule [Chamberlin and Courant, APSR'83] and the Monroe rule [Monroe, APSR'95].
no code implementations • 30 Apr 2021 • Jiehua Chen, Martin Lackner, Jan Maly
Participatory budgeting (PB) is a democratic process where citizens jointly decide on how to allocate public funds to indivisible projects.
no code implementations • 28 Jun 2019 • Jiehua Chen
We study the Reaching Stable Marriage via Divorces (DivorceSM) problem of deciding, given a Stable Marriage instance and an initial matching $M$ , whether there exists a stable matching which is reachable from $M$ by divorce operations as introduced by Knuth [12].
Computer Science and Game Theory
no code implementations • 28 Nov 2014 • Jiehua Chen, Piotr Faliszewski, Rolf Niedermeier, Nimrod Talmon
We study the computational complexity of candidate control in elections with few voters, that is, we consider the parameterized complexity of candidate control in elections with respect to the number of voters as a parameter.