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arXiv 1701.08545q-fin.PRcs.NAmath.APmath.NA
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多维美式期权定价问题稳定数值解的计算:一种半离散化方法

Computing stable numerical solutions for multidimensional American option pricing problems: a semi-discretization approach

Universitat Politécnica de València(巴伦西亚理工大学)

Rafael Company, Vera Egorova, Lucas Jódar, Fazlollah Soleymani

AI总结:

本文提出一种半离散化方法,通过变量变换消除交叉导数项,降低数值方案的 stencil 和计算成本,首次系统分析了美式期权定价问题的数值解稳定性,通过数值实验验证了稳定性条件的有效性。

摘要:

多资产美式期权定价问题的稳定性是一个现存的挑战。本文提出一种通用的变量变换方法,能够消除交叉导数项,从而降低所提出数值方案的stencil和底层计算成本。此类问题的求解始于半离散化方法,随后通过指数时间差分和矩阵求积规则进行全离散化。据我们所知,本文首次系统地处理了数值解的稳定性问题。通过分析数值解相对于前一时间层的时间变化,以及利用矩阵的对数范数,建立了稳定性结果。找到了保证稳定性条件的步长充分条件,同时也保证了解的正性和有界性。两个和三个资产问题的数值实验验证了稳定性条件,并证明了其与其他相关方法的竞争力。

英文摘要:

The matter of the stability for multi-asset American option pricing problems is a present remaining challenge. In this paper a general transformation of variables allows to remove cross derivative terms reducing the stencil of the proposed numerical scheme and underlying computational cost. Solution of a such problem is constructed by starting with a semi-discretization approach followed by a full discretization using exponential time differencing and matrix quadrature rules. To the best of our knowledge the stability of the numerical solution is treated in this paper for the first time. Analysis of the time variation of the numerical solution with respect to previous time level together with the use of logarithmic norm of matrices are the basis of the stability result. Sufficient stability conditions on step sizes, that also guarantee positivity and boundedness of the solution, are found. Numerical examples for two and three asset problems justify the stability conditions and prove its competitiveness with other relevant methods.

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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