Optimal Single-Choice Prophet Inequalities from Samples

Authors Aviad Rubinstein, Jack Z. Wang, S. Matthew Weinberg



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Author Details

Aviad Rubinstein
  • Stanford University, Stanford, CA, USA
Jack Z. Wang
  • Cornell University, Ithaca, NY, USA
S. Matthew Weinberg
  • Princeton University, Princeton, NJ, USA

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Aviad Rubinstein, Jack Z. Wang, and S. Matthew Weinberg. Optimal Single-Choice Prophet Inequalities from Samples. In 11th Innovations in Theoretical Computer Science Conference (ITCS 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 151, pp. 60:1-60:10, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020) https://doi.org/10.4230/LIPIcs.ITCS.2020.60

Abstract

We study the single-choice Prophet Inequality problem when the gambler is given access to samples. We show that the optimal competitive ratio of 1/2 can be achieved with a single sample from each distribution. When the distributions are identical, we show that for any constant ε > 0, O(n) samples from the distribution suffice to achieve the optimal competitive ratio (≈ 0.745) within (1+ε), resolving an open problem of [José R. Correa et al., 2019].

Subject Classification

ACM Subject Classification
  • Theory of computation → Online algorithms
Keywords
  • Online algorithms
  • Probability
  • Optimization
  • Prophet inequalities
  • Samples
  • Auctions

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