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DOI: 10.4230/LIPIcs.APPROX-RANDOM.2016.24

Bounded Independence vs. Moduli

Authors: Ravi Boppana, Johan Håstad, Chin Ho Lee, and Emanuele Viola

Published in: LIPIcs, Volume 60, Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques (APPROX/RANDOM 2016)

Abstract

Let k = k(n) be the largest integer such that there exists a k-wise uniform distribution over {0,1}^n that is supported on the set S_m := {x in {0,1}^n: sum_i x_i equiv 0 mod m}, where m is any integer. We show that Omega(n/m^2 log m) <= k <= 2n/m + 2. For k = O(n/m) we also show that any k-wise uniform distribution puts probability mass at most 1/m + 1/100 over S_m. For any fixed odd m there is k \ge (1 - Omega(1))n such that any k-wise uniform distribution lands in S_m with probability exponentially close to |S_m|/2^n; and this result is false for any even m.

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Ravi Boppana, Johan Håstad, Chin Ho Lee, and Emanuele Viola. Bounded Independence vs. Moduli. In Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques (APPROX/RANDOM 2016). Leibniz International Proceedings in Informatics (LIPIcs), Volume 60, pp. 24:1-24:9, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016)

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@InProceedings{boppana_et_al:LIPIcs.APPROX-RANDOM.2016.24,
  author =	{Boppana, Ravi and H\r{a}stad, Johan and Lee, Chin Ho and Viola, Emanuele},
  title =	{{Bounded Independence vs. Moduli}},
  booktitle =	{Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques (APPROX/RANDOM 2016)},
  pages =	{24:1--24:9},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-018-7},
  ISSN =	{1868-8969},
  year =	{2016},
  volume =	{60},
  editor =	{Jansen, Klaus and Mathieu, Claire and Rolim, Jos\'{e} D. P. and Umans, Chris},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.APPROX-RANDOM.2016.24},
  URN =		{urn:nbn:de:0030-drops-66475},
  doi =		{10.4230/LIPIcs.APPROX-RANDOM.2016.24},
  annote =	{Keywords: Bounded independence, Modulus}
}

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Bounded Independence vs. Moduli

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