Putting a Compass on the Map of Elections

Niclas Boehmer; Robert Bredereck; Piotr Faliszewski; Rolf Niedermeier; Stanisław Szufa

IJCAI 2021poster38 citations

Putting a Compass on the Map of Elections

Niclas Boehmer, Robert Bredereck, Piotr Faliszewski, Rolf Niedermeier, Stanisław Szufa

Abstract

In their AAMAS 2020 paper, Szufa et al. presented a "map of elections" that visualizes a set of 800 elections generated from various statistical cultures. While similar elections are grouped together on this map, there is no obvious interpretation of the elections' positions. We provide such an interpretation by introducing four canonical “extreme” elections, acting as a compass on the map. We use them to analyze both a dataset provided by Szufa et al. and a number of real-life elections. In effect, we find a new parameterization of the Mallows model, based on measuring the expected swap distance from the central preference order, and show that it is useful for capturing real-life scenarios.

Agent-based and Multi-agent Systems: Computational Social ChoiceAgent-based and Multi-agent Systems: Voting

BibTeX

@inproceedings{ijcai2021p9,
  title     = {Putting a Compass on the Map of Elections},
  author    = {Boehmer, Niclas and Bredereck, Robert and Faliszewski, Piotr and Niedermeier, Rolf and Szufa, Stanisław},
  booktitle = {Proceedings of the Thirtieth International Joint Conference on
               Artificial Intelligence, {IJCAI-21}},
  publisher = {International Joint Conferences on Artificial Intelligence Organization},
  editor    = {Zhi-Hua Zhou},
  pages     = {59--65},
  year      = {2021},
  month     = {8},
  note      = {Main Track},
  doi       = {10.24963/ijcai.2021/9},
  url       = {https://doi.org/10.24963/ijcai.2021/9},
}