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Hermite expansion of transition densities and European option prices for multivariate diffusions with jumps

机译:Hermite扩大过渡密度和欧洲期权价格,为跳跃多变量扩散

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摘要

This paper shows that a small-time Hermite expansion is feasible for multivariate diffusions. By introducing an innovative quasi-Lamperti transform, which unitizes the diffusion matrix at the initial time, we derive explicit recursive formulas for the expansion coefficients of transition densities and European option prices for multivariate diffusions with jumps in return. These immediately available explicit formulas, particularly for the irreducbile, nonaffine, time-inhomogeneous model with different types of jump-size distribution, is new to the literature. The explicit formulas can lead to real-time derivatives pricing and hedging as well as model calibration. Extensive numerical experiments illustrate the accuracy and effectiveness of our approach.
机译:本文表明,对于多变量扩散,小型Hermite膨胀是可行的。 通过引入创新的准Lamperti变换,该变换在初始时间内集结了扩散矩阵,我们推导出显式递归公式,用于转换密度的膨胀系数和欧洲期权价格,以获得跳跃的多变量扩散。 这些立即可用的明确公式,特别是对于不同类型的跳跃分布的Irreducbile,非聚氨酸,不均匀模型,是文献的新型。 显式公式可以导致实时衍生物定价和对冲以及模型校准。 广泛的数值实验说明了我们方法的准确性和有效性。

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