Bidding Strategies for Simultaneous Ascending Auctions

Michael Wellman, Osepayshvili Anna, Jeffrey Mackie-Mason and Reeves Daniel
Additional contact information
Osepayshvili Anna: University of Michigan, annaose@umich.edu
Reeves Daniel: Yahoo! Research, dreeves@yahoo-inc.com

The B.E. Journal of Theoretical Economics, 2008, vol. 8, issue 1, 43

Abstract: Simultaneous ascending auctions present agents with various strategic problems, depending on preference structure. As long as bids represent non-repudiable offers, submitting non-contingent bids to separate auctions entails an exposure problem: bidding to acquire a bundle risks the possibility of obtaining an undesired subset of the goods. With multiple goods (or units of a homogeneous good) bidders also need to account for their own effects on prices. Auction theory does not provide analytic solutions for optimal bidding strategies in the face of these problems. We present a new family of decision-theoretic bidding strategies that use probabilistic predictions of final prices: self-confirming distribution-prediction strategies. Bidding based on these is provably not optimal in general. But evidence using empirical game-theoretic methods we developed indicates the strategy is quite effective compared to other known methods when preferences exhibit complementarities. When preferences exhibit substitutability, simpler demand-reduction strategies address the own price effect problem more directly and perform better.

Keywords: auctions; mechanism design; game theory (search for similar items in EconPapers)
Date: 2008
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Citations: View citations in EconPapers (1)

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DOI: 10.2202/1935-1704.1461

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