Title
Phragmén's Voting Methods and Justified Representation.
Abstract
In the late 19th century, Lars Edvard Phragmen proposed a load-balancing approach for selecting committees based on approval ballots. We consider three committee voting rules resulting from this approach: two optimization variants-one minimizing the maximal load and one minimizing the variance of loads-and a sequential variant. We study Phragmen's methods from an axiomatic point of view, focussing on justified representation and related properties that have recently been introduced by Aziz et al. (2015a) and Sanchez-Fernandez et al. (2017). We show that the sequential variant satisfies proportional justified representation, making it the first known polynomial-time computable method with this property. Moreover, we show that the optimization variants satisfy perfect representation. We also analyze the computational complexity of Phragmen's methods and provide mixed- integer programming based algorithms for computing them.
Year
Venue
Field
2017
THIRTY-FIRST AAAI CONFERENCE ON ARTIFICIAL INTELLIGENCE
Voting,Computer science,Cardinal voting systems,Artificial intelligence,Machine learning
DocType
Citations 
PageRank 
Conference
1
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Markus Brill117419.76
Rupert Freeman24611.45
Svante Janson31009149.67
Martin Lackner4403.98