On Bayesian data assimilation for PDEs with ill-posed forward problems
On Bayesian data assimilation for PDEs with ill-posed forward problems
复制标题
具有不适定前向问题的偏微分方程的贝叶斯数据同化
DOI:
10.1088/1361-6420/ac7acd
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发表时间:
2022
期刊:
影响因子:
2.1
通讯作者:
Weber, F
中科院分区:
文献类型:
--
作者:
Lanthaler, S;Mishra, S;Weber, F
We study Bayesian data assimilation (filtering) for time-evolution Partial differential equations (PDEs), for which the underlying forward problem may be very unstable or ill-posed. Such PDEs, which include the Navier–Stokes equations of fluid dynamics, are characterized by a high sensitivity of solutions to perturbations of the initial data, a lack of rigorous global well-posedness results as well as possible non-convergence of numerical approximations. Under very mild and readily verifiable general hypotheses on the forward solution operator of such PDEs, we prove that the posterior measure expressing the solution of the Bayesian filtering problem is stable with respect to perturbations of the noisy measurements, and we provide quantitative estimates on the convergence of approximate Bayesian filtering distributions computed from numerical approximations. For the Navier–Stokes equations, our results imply uniform stability of the filtering problem even at arbitrarily small viscosity, when the underlying forward problem may become ill-posed, as well as the compactness of numerical approximants in a suitable metric on time-parametrized probability measures.
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影响因子:
1.8
作者:
Apte, A.;Jones, C. K. R. T.;Voss, J.
通讯作者:
Voss, J.
影响因子:
2.1
作者:
C. Bardos;E. Tadmor
通讯作者:
E. Tadmor
DOI:
10.1051/m2an:2003060
发表时间:
2003
期刊:
Mathematical Modelling and Numerical Analysis
影响因子:
--
作者:
J. Guermond;S. Prudhomme
通讯作者:
S. Prudhomme
DOI:
10.11499/sicejl.56.656
发表时间:
2017
期刊:
Journal of The Society of Instrument and Control Engineers
影响因子:
--
作者:
河本高文;二木厚吉;吉岡 信和;福元 豊,大塚 悟;上野 玄太
通讯作者:
上野 玄太
影响因子:
3
作者:
S. Lanthaler;Siddhartha Mishra
通讯作者:
Siddhartha Mishra