Certified Offline-Free Reduced Basis (COFRB) Methods for Stochastic Differential Equations Driven by Arbitrary Types of Noise
Certified Offline-Free Reduced Basis (COFRB) Methods for Stochastic Differential Equations Driven by Arbitrary Types of Noise
复制标题
经认证的任意类型噪声驱动的随机微分方程的离线自由降基 (COFRB) 方法
DOI:
10.1007/s10915-019-00976-5
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发表时间:
2019
影响因子:
2.5
通讯作者:
Shu, Chi-Wang
中科院分区:
文献类型:
--
作者:
Liu, Yong;Chen, Tianheng;Chen, Yanlai;Shu, Chi-Wang
In this paper, we propose, analyze, and implement a new reduced basis method (RBM) tailored for the linear (ordinary and partial) differential equations driven by arbitrary (i.e. not necessarily Gaussian) types of noise. There are four main ingredients of our algorithm. First, we propose a new space-time-like treatment of time in the numerical schemes for ODEs and PDEs. The second ingredient is an accurate yet efficient compression technique for the spatial component of the space-time snapshots that the RBM is adopting as bases. The third ingredient is a non-conventional “parameterization” of a non-parametric problem. The last is a RBM that is free of any dedicated offline procedure yet is still efficient online. The numerical experiments verify the effectiveness and robustness of our algorithms for both types of differential equations.
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