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pro vyhledávání: '"andén, Joakim"'
Multireference alignment (MRA) refers to the problem of recovering a signal from noisy samples subject to random circular shifts. Expectation maximization (EM) and variational approaches use statistical modeling to achieve high accuracy at the cost o
Externí odkaz:
http://arxiv.org/abs/2409.04868
Sparse representation systems that encode the signal architecture have had an exceptional impact on sampling and compression paradigms. Remarkable examples are multi-scale directional systems, which, similar to our vision system, encode the underlyin
Externí odkaz:
http://arxiv.org/abs/2403.11362
Microcanonical gradient descent is a sampling procedure for energy-based models allowing for efficient sampling of distributions in high dimension. It works by transporting samples from a high-entropy distribution, such as Gaussian white noise, to a
Externí odkaz:
http://arxiv.org/abs/2403.08362
Autor:
Eickenberg, Michael, Allys, Erwan, Dizgah, Azadeh Moradinezhad, Lemos, Pablo, Massara, Elena, Abidi, Muntazir, Hahn, ChangHoon, Hassan, Sultan, Blancard, Bruno Regaldo-Saint, Ho, Shirley, Mallat, Stephane, Andén, Joakim, Villaescusa-Navarro, Francisco
Extracting non-Gaussian information from the non-linear regime of structure formation is key to fully exploiting the rich data from upcoming cosmological surveys probing the large-scale structure of the universe. However, due to theoretical and compu
Externí odkaz:
http://arxiv.org/abs/2204.07646
Autor:
Stenvall, Vincent, Andén, Joakim
Detta arbete tar avstamp i bilens allt mer problematiserade roll i staden och transportsystemet, dels ur klimatsynpunkt men även som hinder för mer hållbara persontransporter. Stadens utformning har enligt forskning och statliga organ anpassats ef
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:bth-19817
Nonuniform fast Fourier transforms dominate the computational cost in many applications including image reconstruction and signal processing. We thus present a general-purpose GPU-based CUDA library for type 1 (nonuniform to uniform) and type 2 (unif
Externí odkaz:
http://arxiv.org/abs/2102.08463
Autor:
Lostanlen, Vincent, El-Hajj, Christian, Rossignol, Mathias, Lafay, Grégoire, Andén, Joakim, Lagrange, Mathieu
Instrumental playing techniques such as vibratos, glissandos, and trills often denote musical expressivity, both in classical and folk contexts. However, most existing approaches to music similarity retrieval fail to describe timbre beyond the so-cal
Externí odkaz:
http://arxiv.org/abs/2007.10926
When using an electron microscope for imaging of particles embedded in vitreous ice, the objective lens will inevitably corrupt the projection images. This corruption manifests as a band-pass filter on the micrograph. In addition, it causes the phase
Externí odkaz:
http://arxiv.org/abs/1908.03454
Cryo-electron microscopy (cryo-EM), the subject of the 2017 Nobel Prize in Chemistry, is a technology for determining the 3-D structure of macromolecules from many noisy 2-D projections of instances of these macromolecules, whose orientations and pos
Externí odkaz:
http://arxiv.org/abs/1907.01589
Publikováno v:
Inverse Problems, 36:2 (2020)
Single-particle electron cryomicroscopy is an essential tool for high-resolution 3D reconstruction of proteins and other biological macromolecules. An important challenge in cryo-EM is the reconstruction of non-rigid molecules with parts that move an
Externí odkaz:
http://arxiv.org/abs/1907.01898