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Invertible Neural Networks versus MCMC for Posterior Reconstruction in Grazing Incidence X-Ray Fluorescence [article]

Anna Andrle, Nando Farchmin, Paul Hagemann, Sebastian Heidenreich, Victor Soltwisch, Gabriele Steidl
2021 arXiv   pre-print
Grazing incidence X-ray fluorescence is a non-destructive technique for analyzing the geometry and compositional parameters of nanostructures appearing e.g. in computer chips.  ...  In this paper, we propose to reconstruct the posterior parameter distribution given a noisy measurement generated by the forward model by an appropriately learned invertible neural network.  ...  As a non-destructive technique, grazing incidence X-ray fluorescence (GIXRF) is of particular interest for many industrial applications.  ... 
arXiv:2102.03189v1 fatcat:rb5udlcnp5cdtpt3457ymnfy3y

Efficient approximation of high-dimensional exponentials by tensornetworks [article]

Martin Eigel, Nando Farchmin, Sebastian Heidenreich, Philipp Trunschke
2022 arXiv   pre-print
Such exponential functions play an important role in several problems in Uncertainty Quantification, e.g. the approximation of log-normal random fields or the evaluation of Bayesian posterior measures.  ...  Numerical experiments with a log-normal random field and a Bayesian likelihood illustrate the performance of the approach in comparison to other recent low-rank representations for the respective applications  ...  Invertible Neural Networks versus MCMC for Posterior Reconstruction in Grazing Incidence X-Ray Fluorescence. 2021. arXiv: 2102.03189 [cs.LG]. [27] P. B. Rohrbach, S. Dolgov, L.  ... 
arXiv:2105.09064v2 fatcat:gtvefyqhgjamtmdyyhamp4kpmu

Sequential grouping constraints on across‐channel auditory processing

Andrew J. Oxenham, Torsten Dau
2005 Journal of the Acoustical Society of America  
Resulting ROC-curve areas were 0.80Ϯ0.03 for neural-networks versus 0.66Ϯ0.03 for conventional classification.  ...  In an analysis of x-ray movies of French and English monolingual speakers, Gick et al. ͓  ...  Results indicate that ͑a͒ advanced versus retracted tongue root position ͑ATR͒ is a viable feature for describing the phonological distinction in the vowel system; ͑b͒ there is a phonetic difference between  ... 
doi:10.1121/1.4809413 fatcat:pi7xm3qw55ho5oyw27fb3p2bl4

So/ren Buus. Thirty years of psychoacoustic inspiration

Torben Poulsen
2005 Journal of the Acoustical Society of America  
Resulting ROC-curve areas were 0.80Ϯ0.03 for neural-networks versus 0.66Ϯ0.03 for conventional classification.  ...  In an analysis of x-ray movies of French and English monolingual speakers, Gick et al. ͓  ...  Results indicate that ͑a͒ advanced versus retracted tongue root position ͑ATR͒ is a viable feature for describing the phonological distinction in the vowel system; ͑b͒ there is a phonetic difference between  ... 
doi:10.1121/1.4787120 fatcat:7nizh7ha3bfudeucqd2wnrieti

92nd Annual Meeting of the Virginia Academy of Science: Proceedings

Virginia Academy Of Science
2014
to turn their research into tangible results for Tanzanian farmers.  ...  Tech, and will touch upon the process of establishing a statistical laboratory at Sokoine University of Agriculture (SUA) in Tanzania.  ...  This part of the project has looked at the characterizations of four samples of nanoparticles using a scanning electron microscope (SEM), electron dispersion x-ray spectroscopy (EDX), power x-ray diffraction  ... 
doi:10.25778/wdfh-1z33 fatcat:effun5o5pnhgtnte27ks3kd3le