Zobrazeno 1 - 10
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pro vyhledávání: '"Oberai, P."'
We present a novel probabilistic approach for generating multi-fidelity data while accounting for errors inherent in both low- and high-fidelity data. In this approach a graph Laplacian constructed from the low-fidelity data is used to define a multi
Externí odkaz:
http://arxiv.org/abs/2409.08211
Autor:
Dasgupta, Agnimitra, Ramaswamy, Harisankar, Murgoitio-Esandi, Javier, Foo, Ken, Li, Runze, Zhou, Qifa, Kennedy, Brendan, Oberai, Assad
We propose a framework to perform Bayesian inference using conditional score-based diffusion models to solve a class of inverse problems in mechanics involving the inference of a specimen's spatially varying material properties from noisy measurement
Externí odkaz:
http://arxiv.org/abs/2406.13154
Generative modeling has drawn much attention in creative and scientific data generation tasks. Score-based Diffusion Models, a type of generative model that iteratively learns to denoise data, have shown state-of-the-art results on tasks such as imag
Externí odkaz:
http://arxiv.org/abs/2405.11738
We propose a novel modular inference approach combining two different generative models -- generative adversarial networks (GAN) and normalizing flows -- to approximate the posterior distribution of physics-based Bayesian inverse problems framed in h
Externí odkaz:
http://arxiv.org/abs/2310.04690
Autor:
Shaddy, Bryan, Ray, Deep, Farguell, Angel, Calaza, Valentina, Mandel, Jan, Haley, James, Hilburn, Kyle, Mallia, Derek V., Kochanski, Adam, Oberai, Assad
Increases in wildfire activity and the resulting impacts have prompted the development of high-resolution wildfire behavior models for forecasting fire spread. Recent progress in using satellites to detect fire locations further provides the opportun
Externí odkaz:
http://arxiv.org/abs/2309.02615
Publikováno v:
Journal of Indian Association of Public Health Dentistry, Vol 22, Iss 3, Pp 247-253 (2024)
Background Carbonated beverage is known to reduce salivary pH and may even reduce it to critical levels resulting in structural damage to teeth. The purpose of this study was to ascertain the effect of a carbonated drink on salivary pH and compare ch
Externí odkaz:
https://doaj.org/article/1abb4febe607421fba32536005908447
The solution of probabilistic inverse problems for which the corresponding forward problem is constrained by physical principles is challenging. This is especially true if the dimension of the inferred vector is large and the prior information about
Externí odkaz:
http://arxiv.org/abs/2306.04895
Autor:
Pinti, Orazio, Oberai, Assad A.
Low-fidelity data is typically inexpensive to generate but inaccurate. On the other hand, high-fidelity data is accurate but expensive to obtain. Multi-fidelity methods use a small set of high-fidelity data to enhance the accuracy of a large set of l
Externí odkaz:
http://arxiv.org/abs/2304.04862
Autor:
Mandel, J., Hirschi, J., Kochanski, A. K., Farguell, A., Haley, J., Mallia, D. V., Shaddy, B., Oberai, A. A., Hilburn, K. A.
The current fuel moisture content (FMC) subsystems in WRF-SFIRE and its workflow system WRFx use a time-lag differential equation model with assimilation of data from FMC sensors on Remote Automated Weather Stations (RAWS) by the extended augmented K
Externí odkaz:
http://arxiv.org/abs/2301.05427
These notes were compiled as lecture notes for a course developed and taught at the University of the Southern California. They should be accessible to a typical engineering graduate student with a strong background in Applied Mathematics. The main o
Externí odkaz:
http://arxiv.org/abs/2301.00942