Approximately Efficient Two-Sided Combinatorial Auctions
Approximately Efficient Two-Sided Combinatorial Auctions
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近似有效的双边组合拍卖
DOI:
10.1145/3381523
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发表时间:
2020
影响因子:
1.2
通讯作者:
Turchetta, Stefano
中科院分区:
文献类型:
--
作者:
Colini-Baldeschi, Riccardo;Goldberg, Paul W.;Keijzer, Bart de;Leonardi, Stefano;Roughgarden, Tim;Turchetta, Stefano
We develop and extend a line of recent work on the design of mechanisms for two-sided markets. The markets we consider consist of buyers and sellers of a number of items, and the aim of a mechanism is to improve the social welfare by arranging purchases and sales of the items. A mechanism is given prior distributions on the agents’ valuations of the items, but not the actual valuations; thus, the aim is to maximise the expected social welfare over these distributions. As in previous work, we are interested in the worst-case ratio between the social welfare achieved by a truthful mechanism and the best social welfare possible.Our main result is an incentive compatible and budget balanced constant-factor approximation mechanism in a setting where buyers have XOS valuations and sellers’ valuations are additive. This is the first such approximation mechanism for a two-sided market setting where the agents have combinatorial valuation functions. To achieve this result, we introduce a more general kind of demand query that seems to be needed in this situation. In the simpler case that sellers have unit supply (each having just one item to sell), we give a new mechanism whose welfare guarantee improves on a recent one in the literature. We also introduce a more demanding version of thestrong budget balance(SBB) criterion, aimed at ruling out certain “unnatural” transactions satisfied by SBB. We show that the stronger version is satisfied by our mechanisms.
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DOI:
--
发表时间:
2017
期刊:
ACM Conference on Economics and Computation
影响因子:
--
作者:
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通讯作者:
Mingfei Zhao
影响因子:
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DOI:
--
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期刊:
arXiv.org
影响因子:
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DOI:
10.1145/1386790.1386801
发表时间:
2008
期刊:
2010 IEEE 51st Annual Symposium on Foundations of Computer Science
影响因子:
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作者:
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通讯作者:
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DOI:
--
发表时间:
2014
期刊:
International Colloquium on Automata, Languages and Programming
影响因子:
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作者:
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通讯作者:
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