Parameter estimation for linear parabolic SPDEs in two space dimensions based on high frequency data
Parameter estimation for linear parabolic SPDEs in two space dimensions based on high frequency data
复制标题
基于高频数据的二维空间线性抛物型SPDE参数估计
DOI:
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复制
发表时间:
2022
影响因子:
1
通讯作者:
Masayuki Uchida
中科院分区:
文献类型:
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作者:
Yozo Tonaki;Yusuke Kaino;Masayuki Uchida
We consider parameter estimation for a linear parabolic second‐order stochastic partial differential equation (SPDE) in two space dimensions driven by two types of Q$$ Q $$ ‐Wiener processes based on high frequency data in time and space. We first estimate the parameters which appear in the eigenfunctions of the differential operator of the SPDE using the minimum contrast estimator based on the thinned data with respect to space, and then construct an approximate coordinate process of the SPDE. Furthermore, we propose estimators of the coefficient parameters of the SPDE utilizing the approximate coordinate process based on the thinned data with respect to time. We also give some simulation results.
DOI:
10.1137/20m1373347
发表时间:
2022
期刊:
SIAM/ASA Journal on Uncertainty Quantification
影响因子:
--
作者:
Altmeyer R
通讯作者:
Altmeyer R