Balanced coloring: Equally easy for all numbers of colors?

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We investigate the problem to color the vertex set of a hypergraph H = (X,ε) with a fixed number of colors in a balanced manner, i.e., in such a way that all hyperedges contain roughly the same number of vertices in each color (discrepancy problem). We show the following result: Suppose that we are able to compute for each induced subhypergraph a coloring in c1 colors having discrepancy at most D. Then there are colorings in arbitrary numbers c2 of colors having discrepancy at most 11/10 c21D. A c2-coloring having discrepancy at most 11/10 c21D +3c1-k|X|can be computed from (c1 -1)(c2 -1) k colorings in c1 colors having discrepancy at most D with respect to a suitable subhypergraph of H. A central step in the proof is to show that a fairly general rounding problem (linear discrepancy problem in c2 colors) can be solved by computing low-discrepancy c1–colorings.

Original languageEnglish
Title of host publicationSTACS 2002 - 19th Annual Symposium on Theoretical Aspects of Computer Science, Proceedings
EditorsHelmut Alt, Afonso Ferreira
PublisherSpringer Verlag
Pages112-120
Number of pages9
ISBN (Electronic)9783540432838
DOIs
Publication statusPublished - 1 Jan 2002
Externally publishedYes
Event19th Annual Symposium on Theoretical Aspects of Computer Science, STACS 2002 - Antibes - Juan les Pins, France
Duration: 14 Mar 200216 Mar 2002

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume2285
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference19th Annual Symposium on Theoretical Aspects of Computer Science, STACS 2002
Country/TerritoryFrance
CityAntibes - Juan les Pins
Period14/03/0216/03/02

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