TY - JOUR AU - Escoffier, Bruno AU - Gilbert, Hugo AU - Pass-Lanneau, Adèle PY - 2020/04/03 Y2 - 2024/03/28 TI - Iterative Delegations in Liquid Democracy with Restricted Preferences JF - Proceedings of the AAAI Conference on Artificial Intelligence JA - AAAI VL - 34 IS - 02 SE - AAAI Technical Track: Game Theory and Economic Paradigms DO - 10.1609/aaai.v34i02.5562 UR - https://ojs.aaai.org/index.php/AAAI/article/view/5562 SP - 1926-1933 AB - <p>Liquid democracy is a collective decision making paradigm which lies between direct and representative democracy. One main feature of liquid democracy is that voters can delegate their votes in a transitive manner so that: A delegates to B and B delegates to C leads to A delegates to C. Unfortunately, because voters' preferences over delegates may be conflicting, this process may not converge. There may not even exist a stable state (also called equilibrium). In this paper, we investigate the stability of the delegation process in liquid democracy when voters have restricted types of preference on the agent representing them (e.g., single-peaked preferences). We show that various natural structures of preference guarantee the existence of an equilibrium and we obtain both tractability and hardness results for the problem of computing several equilibria with some desirable properties.</p> ER -