Algorithmic Techniques for Necessary and Possible Winners
Algorithmic Techniques for Necessary and Possible Winners
复制标题
必要和可能的获胜者的算法技术
DOI:
10.1145/3458472
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Stoyanovich, Julia
中科院分区:
文献类型:
--
作者:
Chakraborty, Vishal;Delemazure, Theo;Kimelfeld, Benny;Kolaitis, Phokion G.;Relia, Kunal;Stoyanovich, Julia
We investigate the practical aspects of computing the necessary and possible winners in elections over incomplete voter preferences. In the case of the necessary winners, we show how to implement and accelerate the polynomial-time algorithm of Xia and Conitzer. In the case of the possible winners, where the problem is NP-hard, we give a natural reduction to Integer Linear Programming (ILP) for all positional scoring rules and implement it in a leading commercial optimization solver. Further, we devise optimization techniques to minimize the number of ILP executions and, oftentimes, avoid them altogether. We conduct a thorough experimental study that includes the construction of a rich benchmark of election data based on real and synthetic data. Our findings suggest that, the worst-case intractability of the possible winners notwithstanding, the algorithmic techniques presented here scale well and can be used to compute the possible winners in realistic scenarios.
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DOI:
10.1016/j.ejor.2015.08.052
发表时间:
2014
期刊:
Eur. J. Oper. Res.
影响因子:
--
作者:
S. Polyakovskiy;R. Berghammer;F. Neumann
通讯作者:
F. Neumann
DOI:
--
发表时间:
2011
期刊:
International Joint Conference on Artificial Intelligence
影响因子:
--
作者:
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通讯作者:
G. Woeginger
影响因子:
2.7
作者:
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通讯作者:
MALLOWS, CL
DOI:
--
发表时间:
2018
期刊:
International Joint Conference on Artificial Intelligence
影响因子:
--
作者:
B. Kimelfeld;Phokion G. Kolaitis;Julia Stoyanovich
通讯作者:
Julia Stoyanovich
影响因子:
1.1
作者:
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通讯作者:
W. Gehrlein