Non-manipulability of uniform price auctions with a large number of objects
Non-manipulability of uniform price auctions with a large number of objects
复制标题
大量标的统一价格拍卖的不可操纵性
DOI:
10.1007/s00182-018-0641-y
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发表时间:
2018
影响因子:
0.6
通讯作者:
Kazumura Tomoya
中科院分区:
文献类型:
--
作者:
Tajika Tomoya;Kazumura Tomoya
When agents (bidders) have multi-demand preferences, uniform price auctions are generally not immune to agents’ strategic manipulation, and they may achieve an inefficient allocation. We consider economies in which a large number of identical objects have to be allocated. Agents have quasi-linear preferences with non-increasing incremental valuations. We explore the incentives of agents in uniform price auctions. An important assumption on preferences is proposed, called “no monopoly.” It requires that preferences should be correlated in such a way that no agent’s incremental valuation for an additional object when he receives sufficiently many objects is higher than those of the other agents. We show that under no monopoly and other mild assumptions on preferences, as the number of objects goes to infinity, the payment in any uniform price auction converges to that in a Vickrey auction. We deduce that when there are sufficiently many objects, truth-telling is an approximate Bayesian Nash equilibrium in each uniform price auction.
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10.1016/j.geb.2016.07.002
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