Consistent Inversion of Noisy Non‐Abelian X‐Ray Transforms
Consistent Inversion of Noisy Non‐Abelian X‐Ray Transforms
复制标题
噪声非阿贝尔 X 射线变换的一致反演
DOI:
10.1002/cpa.21942
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发表时间:
2021
影响因子:
3
通讯作者:
Paternain, Gabriel P.
中科院分区:
文献类型:
--
作者:
Monard, François;Nickl, Richard;Paternain, Gabriel P.
ForMa simple surface, the nonlinear statistical inverse problem of recovering a matrix field from discrete, noisy measurements of theSO(n)‐valued scattering dataCΦof a solution of a matrix ODE is considered (n≥ 2). Injectivity of the map Φ ↦CΦwas established by Paternain, Salo, and Uhlmann in 2012. A statistical algorithm for the solution of this inverse problem based on Gaussian process priors is proposed, and it is shown how it can be implemented by infinite‐dimensional MCMC methods. It is further shown that as the numberNof measurements of point evaluations ofCΦincreases, the statistical error in the recovery ofconverges toinL2(M)‐distance at a rate that is algebraic in 1/Nand approaches for smooth matrix fields. The proof relies, among other things, on a new stability estimate for the inverse mapCΦ→ Φ.Key applications of our results are discussed in the casen= 3 topolarimetric neutron tomography. © 2020 The Authors.Communications on Pure and Applied Mathematicspublished by Wiley Periodicals LLC
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影响因子:
2.5
作者:
G. Paternain;M. Salo
通讯作者:
M. Salo
DOI:
10.1214/16-aos1504
发表时间:
2015
期刊:
arXiv: Statistics Theory
影响因子:
--
作者:
Richard Nickl;Jakob Sohl
通讯作者:
Jakob Sohl
影响因子:
1.1
作者:
A. Vaart;H. Zanten
通讯作者:
A. Vaart;H. Zanten
DOI:
--
发表时间:
2017
期刊:
Journal of the European Mathematical Society (Print)
影响因子:
--
作者:
Richard Nickl
通讯作者:
Richard Nickl
DOI:
--
发表时间:
1980
期刊:
影响因子:
--
作者:
V. Guillemin;D. Kazhdan
通讯作者:
D. Kazhdan