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arXiv 1005.2228q-fin.CPcs.NAmath.NAstat.CO
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一种去偏蒙特卡洛估计器的通用方法

A general method for debiasing a Monte Carlo estimator

University of Waterloo(滑铁卢大学)

Don McLeish

AI总结:

提出一种通用方法,对数值积分、蒙特卡洛近似或牛顿-拉夫森迭代等过程进行无偏估计,并应用于Heston随机波动率模型中的期权定价。

摘要:

考虑一个过程,无论是随机的还是确定性的,通过数值积分方案、涉及积分近似的蒙特卡洛方法或牛顿-拉夫森迭代来近似方程的根得到。我们假设可以从时间0到有限时间n的过程分布中采样。我们提出了一种方案,用于无偏估计过程的极限值,同时提供标准误差的估计,并将其应用于包括数值积分、求根和Heston随机波动率模型中的期权定价等例子。这在许多潜在应用中用无偏估计器取代了有偏估计器。

英文摘要:

Consider a process, stochastic or deterministic, obtained by using a numerical integration scheme, or from Monte-Carlo methods involving an approximation to an integral, or a Newton-Raphson iteration to approximate the root of an equation. We will assume that we can sample from the distribution of the process from time 0 to finite time n. We propose a scheme for unbiased estimation of the limiting value of the process, together with estimates of standard error and apply this to examples including numerical integrals, root-finding and option pricing in a Heston Stochastic Volatility model. This results in unbiased estimators in place of biased ones i nmany potential applications.

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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