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  • 标题:On the Beck-Fiala Conjecture for Random Set Systems
  • 本地全文:下载
  • 作者:Esther Ezra ; Shachar Lovett
  • 期刊名称:Electronic Colloquium on Computational Complexity
  • 印刷版ISSN:1433-8092
  • 出版年度:2015
  • 卷号:2015
  • 出版社:Universität Trier, Lehrstuhl für Theoretische Computer-Forschung
  • 摘要:

    Motivated by the Beck-Fiala conjecture, we study discrepancy bounds for random sparse set systems. Concretely, these are set systems ( X ) , where each element x X lies in t randomly selected sets of , where t is an integer parameter. We provide new bounds in two regimes of parameters. We show that when X the hereditary discrepancy of ( X ) is with high probability O ( t log t ) ; and when X t the hereditary discrepancy of ( X ) is with high probability O (1) . The first bound combines the Lov{\'a}sz Local Lemma with a new argument based on partial matchings; the second follows from an analysis of the lattice spanned by sparse vectors.

  • 关键词:Beck Fiala ; Discrepancy ; Random
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