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- W4287978985 abstract "Bayesian methods are actively used for parameter identification and uncertainty quantification when solving nonlinear inverse problems with random noise. However, there are only few theoretical results justifying the Bayesian approach. Recent papers, see e.g. cite{Nickl2017,lu2017bernsteinvon} and references therein, illustrate the main difficulties and challenges in studying the properties of the posterior distribution in the nonparametric setup. This paper offers a new approach for study the frequentist properties of the nonparametric Bayes procedures. The idea of the approach is to relax the nonlinear structural equation by introducing an auxiliary functional parameter and replacing the structural equation with a penalty and by imposing a prior on the auxiliary parameter. For the such extended model, we state sharp bounds on posterior concentration and on the accuracy of the penalized MLE and on Gaussian approximation of the posterior, and a number of further results. All the bounds are given in terms of effective dimension, and we show that the proposed calming device does not significantly affect this value." @default.
- W4287978985 created "2022-07-26" @default.
- W4287978985 creator A5035705885 @default.
- W4287978985 date "2019-12-29" @default.
- W4287978985 modified "2023-09-28" @default.
- W4287978985 title "Bayesian inference for nonlinear inverse problems" @default.
- W4287978985 doi "https://doi.org/10.48550/arxiv.1912.12694" @default.
- W4287978985 hasPublicationYear "2019" @default.
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