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Unsupervised Ground Metric Learning
Data classification without access to labeled samples remains a challenging problem. It usually depends on an appropriately chosen …
Janis Auffenberg, Jonas Bresch, Oleh Melnyk, Gabriele Steidl
Phasebook: A survey of selected open problems in phase retrieval
Phase retrieval is an inverse problem that, on one hand, is crucial in many applications across imaging and physics, and, on the other …
Marc Allain, Selin Aslan, Wim Coene, Sjoerd Dirksen, Jonathan Dong, Julien Flamant, Mark Iwen, Felix Krahmer, Tristan van Leeuwen, Oleh Melnyk, Andreas Menzel, Allard P. Mosk, Viktor Nikitin, Palina Salanevich, Gerlind Plonka, Matthias Wellershoff
Eigenstructure Analysis of Bloch Wave and Multislice Matrix Formulations for Dynamical Scattering in Transmission Electron Microscopy
We investigate the eigenstructure of matrix formulations used for modeling scattering processes in materials by transmission electron …
Arya Bangun, Oleh Melnyk, Benjamin März
DOI
Stochastic Amplitude Flow for phase retrieval, its convergence and doppelgängers
In this paper, we focus on Stochastic Amplitude Flow (SAF) for phase retrieval, a stochastic gradient descent for the amplitude-based …
Oleh Melnyk