Optimal Allocation in Combinatorial Auctions with Quadratic Utility Functions

  • Akiyoshi Shioura
  • Shunya Suzuki
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6648)

Abstract

We discuss the optimal allocation problem in combinatorial auction, where the items are allocated to bidders so that the sum of the bidders’ utilities is maximized. In this paper, we consider the case where utility functions are given by quadratic functions; the class of quadratic utility functions has a succinct representation but is sufficiently general. The main aim of this paper is to show the computational complexity of the optimal allocation problem with quadratic utility functions. We consider the cases where utility functions are submodular and supermodular, and show NP-hardness and/or polynomial-time exact/approximation algorithm. These results are given by using the relationship with graph cut problems such as the min/max cut problem and the multiway cut problem.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Akiyoshi Shioura
    • 1
  • Shunya Suzuki
    • 1
  1. 1.Graduate School of Information SciencesTohoku UniversitySendaiJapan

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