英文标题:
《Gambling in contests with random initial law》
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作者:
Han Feng, David Hobson
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最新提交年份:
2016
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英文摘要:
This paper studies a variant of the contest model introduced in Seel and Strack [J. Econom. Theory 148 (2013) 2033-2048]. In the Seel-Strack contest, each agent or contestant privately observes a Brownian motion, absorbed at zero, and chooses when to stop it. The winner of the contest is the agent who stops at the highest value. The model assumes that all the processes start from a common value $x_0>0$ and the symmetric Nash equilibrium is for each agent to utilise a stopping rule which yields a randomised value for the stopped process. In the two-player contest, this randomised value has a uniform distribution on $[0,2x_0]$. In this paper, we consider a variant of the problem whereby the starting values of the Brownian motions are independent, nonnegative random variables that have a common law $\\mu$. We consider a two-player contest and prove the existence and uniqueness of a symmetric Nash equilibrium for the problem. The solution is that each agent should aim for the target law $\\nu$, where $\\nu$ is greater than or equal to $\\mu$ in convex order; $\\nu$ has an atom at zero of the same size as any atom of $\\mu$ at zero, and otherwise is atom free; on $(0,\\infty)$ $\\nu$ has a decreasing density; and the density of $\\nu$ only decreases at points where the convex order constraint is binding.
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中文摘要:
本文研究了Seel和Strack[J.Economo.Theory 148(2013)2033-2048]中引入的竞赛模型的一个变体。在Seel Strack竞赛中,每个代理人或参赛者都会私下观察一个布朗运动,全神贯注于零,并选择何时停止它。比赛的获胜者是停在最高值的经纪人。该模型假设所有过程都从一个公共值$x_0>0$开始,对称纳什均衡用于每个代理使用一个停止规则,该规则为停止的过程生成一个随机值。在双人比赛中,该随机值在$[0,2x_0]$上具有均匀分布。在本文中,我们考虑了一个问题的变体,即布朗运动的起始值是独立的、非负的随机变量,具有一个共同定律$\\mu$。我们考虑了一个两人竞争问题,证明了该问题对称纳什均衡的存在唯一性。解决方案是,每个代理都应该以目标法则$\\nu$为目标,其中$\\nu$以凸顺序大于或等于$\\mu$$\\nu$的零原子大小与$\\mu$的零原子大小相同,否则是无原子的;在$(0、\\infty)$\\nu$上,密度降低;而$\\nu$的密度仅在凸序约束绑定的点处减小。
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分类信息:
一级分类:Quantitative Finance 数量金融学
二级分类:Economics 经济学
分类描述:q-fin.EC is an alias for econ.GN. Economics, including micro and macro economics, international economics, theory of the firm, labor economics, and other economic topics outside finance
q-fin.ec是econ.gn的别名。经济学,包括微观和宏观经济学、国际经济学、企业理论、劳动经济学和其他金融以外的经济专题
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一级分类:Mathematics 数学
二级分类:Probability 概率
分类描述:Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory
概率论与随机过程的理论与应用:例如中心极限定理,大偏差,随机微分方程,统计力学模型,排队论
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