《Conic Martingales from Stochastic Integrals》
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作者:
Fr\\\'ed\\\'eric Vrins and Monique Jeanblanc
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最新提交年份:
2016
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英文摘要:
In this paper we introduce the concept of conic martingales}. This class refers to stochastic processes having the martingale property, but that evolve within given (possibly time-dependent) boundaries. We first review some results about the martingale property of solution to driftless stochastic differential equations. We then provide a simple way to construct and handle such processes. Specific attention is paid to martingales in $[0,1]$. One of these martingales proves to be analytically tractable. It is shown that up to shifting and rescaling constants, it is the only martingale (with the trivial constant, Brownian motion and Geometric Brownian motion) having a separable coefficient $\\sigma(t,y)=g(t)h(y)$ and that can be obtained via a time-homogeneous mapping of Gaussian diffusions. The approach is exemplified to the modeling of stochastic conditional survival probabilities in the univariate (both conditional and unconditional to survival) and bivariate cases.
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中文摘要:
本文引入了二次鞅}的概念。这类随机过程具有鞅性质,但在给定的(可能与时间相关的)边界内演化。我们首先回顾了关于无漂移随机微分方程解的鞅性质的一些结果。然后,我们提供了一种构造和处理此类过程的简单方法。特别注意$[0,1]$中的鞅。其中一个鞅被证明是可分析的。结果表明,在移位和重标度常数之前,它是唯一一个具有可分离系数$\\sigma(t,y)=g(t)h(y)$的鞅(具有平凡常数、布朗运动和几何布朗运动),并且可以通过高斯扩散的时间齐次映射获得。该方法在单变量(条件生存概率和无条件生存概率)和二变量情况下的随机条件生存概率建模中得到了示例。
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分类信息:
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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一级分类:Quantitative Finance 数量金融学
二级分类:Mathematical Finance 数学金融学
分类描述:Mathematical and analytical methods of finance, including stochastic, probabilistic and functional analysis, algebraic, geometric and other methods
金融的数学和分析方法,包括随机、概率和泛函分析、代数、几何和其他方法
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