Abstract
In this short article, we describe how the correlation of typical diffusion processes arising e.g. in financial modelling can be exploited—by means of asymptotic analysis of principal components—to make Feynman-Kac PDEs of high dimension computationally tractable. We explore the links to dimension adaptive sparse grids (Gerstner and Griebel, Computing 71:65–87, 2003), anchored ANOVA decompositions and dimension-wise integration (Griebel and Holtz, J Complexity 26:455–489, 2010), and the embedding in infinite-dimensional weighted spaces (Sloan and Woźniakowski, J Complexity 14:1–33, 1998). The approach is shown to give sufficient accuracy for the valuation of index options in practice. These numerical findings are backed up by a complexity analysis that explains the independence of the computational effort of the dimension in relevant parameter regimes.
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Reisinger, C. (2012). Asymptotic Expansion Around Principal Components and the Complexity of Dimension Adaptive Algorithms. In: Garcke, J., Griebel, M. (eds) Sparse Grids and Applications. Lecture Notes in Computational Science and Engineering, vol 88. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31703-3_13
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DOI: https://doi.org/10.1007/978-3-642-31703-3_13
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