The Metric Distortion of Multiwinner Voting
The Metric Distortion of Multiwinner Voting
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多方投票的指标扭曲
DOI:
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发表时间:
2022
期刊:
影响因子:
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通讯作者:
Alexandros A. Voudouris
中科院分区:
文献类型:
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作者:
I. Caragiannis;Nisarg Shah;Alexandros A. Voudouris
We extend the recently introduced framework of metric distortion to multiwinner voting. In this framework, n agents and m alternatives are located in an underlying metric space. The exact distances between agents and alternatives are unknown. Instead, each agent provides a ranking of the alternatives, ordered from the closest to the farthest. Typically, the goal is to select a single alternative that approximately minimizes the total distance from the agents, and the worst-case approximation ratio is termed distortion. In the case of multiwinner voting, the goal is to select a committee of k alternatives that (approximately) minimizes the total cost to all agents. We consider the scenario where the cost of an agent for a committee is her distance from the q-th closest alternative in the committee. We reveal a surprising trichotomy on the distortion of multiwinner voting rules in terms of k and q: The distortion is unbounded when q
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DOI:
10.24963/ijcai.2021/589
发表时间:
2021
期刊:
Proceedings of the Thirtieth International Joint Conference on Artificial Intelligence Survey Track.
影响因子:
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作者:
Anshelevich, Elliot;Filos-Ratsikas, Aris;Shah, Nisarg;Voudouris, Alexandros A.
通讯作者:
Voudouris, Alexandros A.
DOI:
10.1145/3230654.3230658
发表时间:
2018
期刊:
Systems and Computation
影响因子:
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作者:
Goel, Ashish;Hulett, Reyna;Krishnaswamy, Anilesh K.
通讯作者:
Krishnaswamy, Anilesh K.
DOI:
10.1145/3328526.3329550
发表时间:
2019
期刊:
Proceedings of the 2019 ACM Conference on Economics
影响因子:
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作者:
Munagala, Kamesh;Wang, Kangning
通讯作者:
Wang, Kangning
DOI:
10.1145/3033274.3085138
发表时间:
2017
期刊:
EC '17 Proceedings of the 2017 ACM Conference on Economics and Computation
影响因子:
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作者:
Goel, Ashish;Krishnaswamy, Anilesh K.;Munagala, Kamesh
通讯作者:
Munagala, Kamesh