Yotam Gafni — accepted AI-conference papers

2023

From Monopoly to Competition: Optimal Contests Prevail

Xiaotie Deng, Yotam Gafni, Ron Lavi, Tao Lin, Hongyi Ling

AAAI 2023technical

We study competition among contests in a general model that allows for an arbitrary and heterogeneous space of contest design and symmetric contestants. The goal of the contest designers is to maximize the contestants' sum of efforts. Our main result shows that optimal contests in the monopolistic s…

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2021

Worst-case Bounds on Power vs. Proportion in Weighted Voting Games with Application to False-name Manipulation

Yotam Gafni, Ron Lavi, Moshe Tennenholtz

IJCAI 2021poster

Weighted voting games are applicable to a wide variety of multi-agent settings. They enable the formalization of power indices which quantify the coalitional power of players. We take a novel approach to the study of the power of big vs.~small players in these games. We model small (big) players as…

Cited by 2 Source ↗PDF ↗Scholar ↗