1 citations · 1 across the 3 of their papers we have counts for
5 papers
Low-Rank Approximation by Randomly Pivoted LU
Marc Aurèle Gilles, Heather Wilber
The low-rank approximation properties of Randomly Pivoted LU (RPLU), a variant of Gaussian elimination where pivots are sampled proportional to the squared entries of the Schur com…
A time-frequency method for acoustic scattering with trapping
Heather Wilber, Wietse Vaes, Abinand Gopal +1
A Fourier transform method is introduced for a class of hybrid time-frequency methods that solve the acoustic scattering problem in regimes where the solution exhibits both highly…
Data-driven Algorithms for signal processing with trigonometric rational functions
Heather Wilber, Anil Damle, Alex Townsend
Rational approximation schemes for reconstructing periodic signals from samples with poorly separated spectral content are described. These methods are automatic and adaptive, requ…
On the singular values of matrices with high displacement rank
Alex Townsend, Heather Wilber
We introduce a new ADI-based low rank solver for , where has rapidly decaying singular values. Our approach results in both theoretical and practical gains, including…
Computing with functions in spherical and polar geometries II. The disk
Heather Wilber, Alex Townsend, Grady Wright
A collection of algorithms is described for numerically computing with smooth functions defined on the unit disk. Low rank approximations to functions in polar geometries are forme…