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Stochastic root finding for optimized certainty equivalents

机译:随机根查找优化确定性等价

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Global financial markets require suitable techniques for the quantification of the downside risk of financial positions. In the current paper, we concentrate on Monte Carlo methods for the estimation of an important and broad class of convex risk measures which can be constructed on the basis of optimized certainty equivalents (OCEs). This family of risk measures - originally introduced in Ben-Tal and Teboulle (2007) - includes, among others, the entropic risk measure and average value at risk. The calculation of OCEs involves a stochastic optimization problem that can be reduced to a stochastic root finding problem via a first order condition. We describe suitable algorithms and illustrate their properties in numerical case studies.
机译:全球金融市场需要合适的技术来量化金融头寸的下行风险。在本文中,我们集中在蒙特卡洛方法上,以估计可以在优化确定性等值(OCE)的基础上构造的一类重要且广泛的凸风险度量。该风险度量标准系列最初是在Ben-Tal和Teboulle(2007)中引入的,其中包括熵风险度量标准和风险平均值。 OCE的计算涉及一个随机优化问题,该问题可以通过一阶条件简化为随机寻根问题。我们描述了合适的算法,并在数值案例研究中说明了它们的性质。

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