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An Algorithm for Komlós Conjecture Matching Banaszczyk's Bound

Published: 01 January 2019 Publication History

Abstract

We consider the problem of finding a low discrepancy coloring for sparse set systems where each element lies in at most $t$ sets. We give an efficient algorithm that finds a coloring with discrepancy $O((t \log n)^{1/2})$, matching the best known nonconstructive bound for the problem due to Banaszczyk. The previous algorithms only achieved an $O(t^{1/2} \log n)$ bound. The result also extends to the more general Komlós setting and gives an algorithmic $O(\log^{1/2} n)$ bound.

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  • (2022)Flow time scheduling and prefix Beck-FialaProceedings of the 54th Annual ACM SIGACT Symposium on Theory of Computing10.1145/3519935.3520077(331-342)Online publication date: 9-Jun-2022
  • (2022)Matrix discrepancy from Quantum communicationProceedings of the 54th Annual ACM SIGACT Symposium on Theory of Computing10.1145/3519935.3519954(637-648)Online publication date: 9-Jun-2022

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            Published In

            cover image SIAM Journal on Computing
            SIAM Journal on Computing  Volume 48, Issue 2
            DOI:10.1137/smjcat.48.2
            Issue’s Table of Contents

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            Society for Industrial and Applied Mathematics

            United States

            Publication History

            Published: 01 January 2019

            Author Tags

            1. discrepancy
            2. semidefinite programming
            3. random walk

            Author Tags

            1. 68W20
            2. 11K38
            3. 68Q25

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            • (2022)Flow time scheduling and prefix Beck-FialaProceedings of the 54th Annual ACM SIGACT Symposium on Theory of Computing10.1145/3519935.3520077(331-342)Online publication date: 9-Jun-2022
            • (2022)Matrix discrepancy from Quantum communicationProceedings of the 54th Annual ACM SIGACT Symposium on Theory of Computing10.1145/3519935.3519954(637-648)Online publication date: 9-Jun-2022

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