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Mathematics of Computation

Published by the American Mathematical Society since 1960 (published as Mathematical Tables and other Aids to Computation 1943-1959), Mathematics of Computation is devoted to research articles of the highest quality in computational mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.78.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

Non-centered parametric variational Bayes’ approach for hierarchical inverse problems of partial differential equations
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by Jiaming Sui and Junxiong Jia
Math. Comp. 93 (2024), 1715-1760
DOI: https://doi.org/10.1090/mcom/3906
Published electronically: November 15, 2023

Abstract:

This paper proposes a non-centered parameterization based infinite-dimensional mean-field variational inference (NCP-iMFVI) approach for solving the hierarchical Bayesian inverse problems. This method can generate available estimates from the approximated posterior distribution efficiently. To avoid the mutually singular obstacle that occurred in the infinite-dimensional hierarchical approach, we propose a rigorous theory of the non-centered variational Bayesian approach. Since the non-centered parameterization weakens the connection between the parameter and the hyper-parameter, we can introduce the hyper-parameter to all terms of the eigendecomposition of the prior covariance operator. We also show the relationships between the NCP-iMFVI and infinite-dimensional hierarchical approaches with centered parameterization. The proposed algorithm is applied to three inverse problems governed by the simple smooth equation, the Helmholtz equation, and the steady-state Darcy flow equation. Numerical results confirm our theoretical findings, illustrate the efficiency of solving the iMFVI problem formulated by large-scale linear and non-linear statistical inverse problems, and verify the mesh-independent property.
References
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Bibliographic Information
  • Jiaming Sui
  • Affiliation: School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, People’s Republic of China
  • ORCID: 0009-0006-2033-4800
  • Email: sjming1997327@stu.xjtu.edu.cn
  • Junxiong Jia
  • Affiliation: School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, People’s Republic of China
  • MR Author ID: 947692
  • ORCID: 0000-0002-0917-2381
  • Email: jjx323@xjtu.edu.cn
  • Received by editor(s): November 19, 2022
  • Received by editor(s) in revised form: July 30, 2023, and August 25, 2023
  • Published electronically: November 15, 2023
  • Additional Notes: This work was supported by the NSFC grants 12271428, 12322116 and the Major projects of the NSFC grants 12090021, 12090020 and in part by the Natural Science Basic Research Plan in Shaanxi Province of China under Grant 2023-JC-QN-0035.
    The second author is the corresponding author.
  • © Copyright 2023 American Mathematical Society
  • Journal: Math. Comp. 93 (2024), 1715-1760
  • MSC (2020): Primary 65L09, 35R30, 49N45, 62F15
  • DOI: https://doi.org/10.1090/mcom/3906