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arXiv 1105.0819cs.GTphysics.soc-phq-fin.GN
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最低唯一投标拍卖中的均衡策略和群体规模效应

Equilibrium strategy and population-size effects in lowest unique bid auctions

Simone Pigolotti, Sebastian Bernhardsson, Jeppe Juul, Gorm Galster, Pierpaolo Vivo

摘要:

在最低唯一出价拍卖中,$N$玩家出价购买物品。获胜者是谁的地方\emph{lowest}出价,只要它也是唯一的。我们使用一个大典的方法来推导出一个分析表达式的均衡分布的战略。然后,我们研究的解决方案作为一个函数的平均玩家数量的属性,并比较它们与一个大型的互联网拍卖数据集。该理论与小群体大小$N$的数据具有惊人的准确性,而对于较大的$N$,观察到一个质的不同的分布。我们解释这一结果的出现,两个不同的制度,其中一个适应是可行的,在其中一个是不。我们的研究结果质疑了大量人口在参与集体游戏时适应并找到最佳策略的实际可能性。

英文摘要:

In lowest unique bid auctions, $N$ players bid for an item. The winner is whoever places the \emph{lowest} bid, provided that it is also unique. We use a grand canonical approach to derive an analytical expression for the equilibrium distribution of strategies. We then study the properties of the solution as a function of the mean number of players, and compare them with a large dataset of internet auctions. The theory agrees with the data with striking accuracy for small population size $N$, while for larger $N$ a qualitatively different distribution is observed. We interpret this result as the emergence of two different regimes, one in which adaptation is feasible and one in which it is not. Our results question the actual possibility of a large population to adapt and find the optimal strategy when participating in a collective game.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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