Search Results for author: Tomohiro Koana

Found 2 papers, 0 papers with code

A Refined Complexity Analysis of Fair Districting over Graphs

no code implementations23 Feb 2021 Niclas Boehmer, Tomohiro Koana, Rolf Niedermeier

We study the NP-hard Fair Connected Districting problem recently proposed by Stoica et al. [AAMAS 2020]: Partition a vertex-colored graph into k connected components (subsequently referred to as districts) so that in every district the most frequent color occurs at most a given number of times more often than the second most frequent color.

Computer Science and Game Theory Discrete Mathematics

The Complexity of Gerrymandering Over Graphs: Paths and Trees

no code implementations17 Feb 2021 Matthias Bentert, Tomohiro Koana, Rolf Niedermeier

Roughly speaking, gerrymandering is the systematic manipulation of the boundaries of electoral districts to make a specific (political) party win as many districts as possible.

Data Structures and Algorithms Discrete Mathematics

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