Journal
OPTIMIZATION AND ENGINEERING
Volume 22, Issue 4, Pages 2553-2574Publisher
SPRINGER
DOI: 10.1007/s11081-021-09677-1
Keywords
Expected improvement; Gaussian process; Generalized chi-square distribution; Model calibration; Functional principal component analysis
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Funding
- National Science Foundation [DMREF-1921873]
- Department of Defense (DoD) through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program
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Inspired by the parameter identification problem in a reaction-diffusion transport model, we proposed a Bayesian optimization procedure to solve the inverse problem by improving the predictive distribution and reducing the dimensionality of functional response data for efficient computation of the expected improvement acquisition function.
Motivated by the parameter identification problem of a reaction-diffusion transport model in a vapor phase infiltration processes, we propose a Bayesian optimization procedure for solving the inverse problem that aims to find an input setting that achieves a desired functional output. The proposed algorithm improves over the standard single-objective Bayesian optimization by (i) utilizing the generalized chi-square distribution as a more appropriate predictive distribution for the squared distance objective function in the inverse problems, and (ii) applying functional principal component analysis to reduce the dimensionality of the functional response data, which allows for efficient approximation of the predictive distribution and the subsequent computation of the expected improvement acquisition function.
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