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Sequential ensemble transform for Bayesian inverse problems

Journal Article · · Journal of Computational Physics
 [1];  [2];  [3];  [4]
  1. Univ. of Texas, Austin, TX (United States). Inst. for Computational Engineering & Sciences; National Univ. of Singapore (Singapore)
  2. National Univ. of Singapore (Singapore). Probability and Applied Statistics
  3. Sanchez Oil & Gas, Houston, TX (United States)
  4. Univ. of Texas, Austin, TX (United States). Inst. for Computational Engineering & Sciences; Univ. of Texas, Austin, TX (United States). Dept. of Aerospace Engineering & Engineering Mechanics
In this work, we present the Sequential Ensemble Transform (SET) method, an approach for generating approximate samples from a Bayesian posterior distribution. The method explores the posterior distribution by solving a sequence of discrete optimal transport problems to produce a series of transport plans which map prior samples to posterior samples. We prove that the sequence of Dirac mixture distributions produced by the SET method converges weakly to the true posterior as the sample size approaches infinity. Furthermore, our numerical results indicate that, when compared to standard Sequential Monte Carlo (SMC) methods, the SET approach is more robust to the choice of Markov mutation kernels and requires less computational efforts to reach a similar accuracy when used to explore complex posterior distributions. Finally, we describe adaptive schemes that allow to completely automate the use of the SET method.
Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
Defense Threat Reduction Agency (DTRA); National Science Foundation (NSF); USDOE; USDOE Office of Science (SC)
Grant/Contract Number:
SC0018147
OSTI ID:
1852513
Alternate ID(s):
OSTI ID: 1775922
OSTI ID: 23203496
Journal Information:
Journal of Computational Physics, Journal Name: Journal of Computational Physics Journal Issue: C Vol. 427; ISSN 0021-9991
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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