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Journal of Information Processing
Vol. 21 (2013) No. 1 pp. 9-15

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http://doi.org/10.2197/ipsjjip.21.9


A multi-unit combinatorial auction is a combinatorial auction that has some items that can be seen as indistinguishable. Although the mechanism can be applied to dynamic electricity auctions and various purposes, it is difficult to apply to large-scale auction problems due to its computational intractability. In this paper, I present an idea and an analysis about an approximate allocation and pricing algorithm that is capable of handling multi-unit auctions. The analysis shows that the algorithm effectively produces approximation allocations that are necessary in pricing. Furthermore, the algorithm can be seen as an approximation of VCG (Vickrey-Clarke-Groves) mechanism satisfying budget balance condition and bidders' individual rationality without having unrealistic assumptions on bidders' behaviors. I show that the proposed allocation algorithm successfully produced good allocations for those problems that could not be easily solved by ordinary LP solvers due to hard time constraints.

Copyright © 2013 by the Information Processing Society of Japan

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