20–24 Jun 2024
Dobřichovice
Europe/Prague timezone

Bayesian methods in neural networks for inverse atmospheric modelling

21 Jun 2024, 15:40
20m
Dobřichovice

Dobřichovice

Pražská 375, 252 29, Dobřichovice

Speaker

Antonie Brožová

Description

Recovering a source and an amount of an emitted substance from distant measurement is an ill-posed problem. In this contribution, two methods based on Bayes theorem will be compared on a realistic toy problem with microplastics. First of them is a Bayesian neural network pretrained to mimic a lognormal process and second one is hierarchical variational model, where the parameters of the posterior distribution are modeled by a convolutional neural network. Both these approaches allow to incorporate spatial dependency of the locations of the source and offer an estimate of uncertainty to assess the reliability of the method.

Primary authors

Antonie Brožová Prof. Václav Šmídl (UTIA, CAS) Dr Ondřej Tichý (UTIA, CAS)

Presentation materials