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Online auctions and generalized secretary problems

Published: 01 June 2008 Publication History

Abstract

We present generalized secretary problems as a framework for online auctions. Elements, such as potential employees or customers, arrive one by one online. After observing the value derived from an element, but without knowing the values of future elements, the algorithm has to make an irrevocable decision whether to retain the element as part of a solution, or reject it. The way in which the secretary framework differs from traditional online algorithms is that the elements arrive in uniformly random order.
Many natural online auction scenarios can be cast as generalized secretary problems, by imposing natural restrictions on the feasible sets. For many such settings, we present surprisingly strong constant factor guarantees on the expected value of solutions obtained by online algorithms. The framework is also easily augmented to take into account time-discounted revenue and incentive compatibility. We give an overview of recent results and future research directions.

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Information

Published In

cover image ACM SIGecom Exchanges
ACM SIGecom Exchanges  Volume 7, Issue 2
June 2008
60 pages
EISSN:1551-9031
DOI:10.1145/1399589
Issue’s Table of Contents

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 01 June 2008
Published in SIGECOM Volume 7, Issue 2

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Author Tags

  1. auctions
  2. knapsack
  3. matroids
  4. online algorithms
  5. secretary problems

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