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Balanced coloring: Equally easy for all numbers of colors?

  • Christian-Albrechts-University Kiel

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Résumé

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.

langue originaleAnglais
titreSTACS 2002 - 19th Annual Symposium on Theoretical Aspects of Computer Science, Proceedings
rédacteurs en chefHelmut Alt, Afonso Ferreira
EditeurSpringer Verlag
Pages112-120
Nombre de pages9
ISBN (Electronique)9783540432838
Les DOIs
étatPublié - 1 janv. 2002
Modification externeOui
Evénement19th Annual Symposium on Theoretical Aspects of Computer Science, STACS 2002 - Antibes - Juan les Pins, France
Durée: 14 mars 200216 mars 2002

Série de publications

NomLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume2285
ISSN (imprimé)0302-9743
ISSN (Electronique)1611-3349

Une conférence

Une conférence19th Annual Symposium on Theoretical Aspects of Computer Science, STACS 2002
Pays/TerritoireFrance
La villeAntibes - Juan les Pins
période14/03/0216/03/02

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