Pricing American options under multi-states: a radial basis collocation approach

被引:0
作者
Heidari S. [1 ]
Azari H. [1 ]
机构
[1] Department of Mathematics, Faculty of Mathematical Sciences, Shahid Beheshti University, General Campus, Evin, Tehran
关键词
American option; Free boundary problem; Radial basis functions; Regime-switching model;
D O I
10.1007/s40324-017-0137-x
中图分类号
学科分类号
摘要
In this paper, a mesh-free method based on Radial Basis Functions (RBFs) interpolation is proposed to evaluate American options written on stocks under a regime-switching model. Under this model, we need to solve coupled partial differential equations with free boundaries feature. In this respect, we apply the radial basis functions as spatial collocation scheme and Backward Euler scheme for the time derivative. We expand the solution vector in terms of Cubic functions as the radial basis functions and collocate system of equations at some collocation points. We applied the LU decomposition to solve the resulting system. Then numerical approximations of the free boundaries can be computed using the Newton’s iterative method. Numerical results are presented to indicate the accuracy of the RBFs interpolation for various combinations of parameters comparing with some recent proposed approaches. © 2017, Sociedad Española de Matemática Aplicada.
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页码:365 / 378
页数:13
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