33 citations · 157 across the 27 of their papers we have counts for
4 papers · 1 filter
Direct inversion of the nonequispaced fast Fourier transform
Melanie Kircheis, Daniel Potts
Various applications such as MRI, solution of PDEs, etc. need to perform an inverse nonequispaced fast Fourier transform (NFFT), i. e., compute Fourier coefficients from given…
Accelerating the calculation of dipolar interactions in particle based simulations with open boundary conditions by means of the P2NFFT method
Rudolf Weeber, Franziska Nestler, Florian Weik +3
Magnetic gels are soft elastic materials consisting of magnetic particles embedded in a polymer network. Their shape and elasticity can be controlled by an external magnetic field,…
NFFT meets Krylov methods: Fast matrix-vector products for the graph Laplacian of fully connected networks
Dominik Alfke, Daniel Potts, Martin Stoll +1
The graph Laplacian is a standard tool in data science, machine learning, and image processing. The corresponding matrix inherits the complex structure of the underlying network an…
Transformed rank-1 lattices for high-dimensional approximation
Robert Nasdala, Daniel Potts
This paper describes an extension of Fourier approximation methods for multivariate functions defined on the torus to functions in a weighted Hilbert space $L_{2}(\m…