Bayesian uncertainty estimation for full waveform inversion: A numerical study
Bayesian uncertainty estimation for full waveform inversion: A numerical study
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全波形反演的贝叶斯不确定性估计:数值研究
DOI:
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
D. Peter
中科院分区:
文献类型:
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作者:
M. Izzatullah;T. Leeuwen;D. Peter
Full waveform inversion enables us to obtain high-resolution subsurface images. However, estimating the associated uncertainties is not trivial. Hessian-based method gives us an oppor-tunity to assess the uncertainties around a given estimate based on the inverse of the Hessian, evaluated at that estimate. In this work we study various algorithms for extracting information from this inverse Hessian based on a low-rank approximation. In particular, we compare the Lanczos method to the randomized singular value decomposition. We demonstrate that the low-rank approximation may lead to a biased conclusion.
DOI:
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发表时间:
2012
期刊:
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影响因子:
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作者:
P. Martinsson;N. Halko
通讯作者:
P. Martinsson;N. Halko