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Iterative Combinatorial Auctions with Bidder-Determined Combinations

  • R. H. Kwon

    ()

    (Department of Mechanical and Industrial Engineering, University of Toronto, Ontario, Canada, M5S 3G8)

  • G. Anandalingam

    ()

    (The Robert H. Smith School of Business, University of Maryland, College Park, Maryland 20742)

  • L. H. Ungar

    ()

    (Department of Computer and Information Science, University of Pennsylvania, Pennsylvania 19104)

Registered author(s):

    In combinatorial auctions, multiple distinct items are sold simultaneously and a bidder may place a single bid on a set (package) of distinct items. The determination of packages for bidding is a nontrivial task, and existing efficient formats require that bidders know the set of packages and/or their valuations. In this paper, we extend an efficient ascending combinatorial auction mechanism to use approximate single-item pricing. The single-item prices in each round are derived from a linear program that is constructed to reflect the current allocation of packages. Introduction of approximate single-item prices allows for endogenous bid determination where bidders can discover packages that were not included in the original bid set. Due to nonconvexities, single-item prices may not exist that are exact marginal values. We show that the use of approximate single-item prices with endogenous bidding always produces allocations that are at least as efficient as those from bidding with a fixed set of packages based on package pricing. A network resource allocation example is given that illustrates the benefits of our endogenous bidding mechanism.

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    File URL: http://dx.doi.org/10.1287/mnsc.1040.0335
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    Article provided by INFORMS in its journal Management Science.

    Volume (Year): 51 (2005)
    Issue (Month): 3 (March)
    Pages: 407-418

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    Handle: RePEc:inm:ormnsc:v:51:y:2005:i:3:p:407-418
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