25 citations · 103 across the 19 of their papers we have counts for
5 papers · 1 filter
Fast Principal Component Analysis for Cryo-EM Images
Nicholas F. Marshall, Oscar Mickelin, Yunpeng Shi +1
Principal component analysis (PCA) plays an important role in the analysis of cryo-EM images for various tasks such as classification, denoising, compression, and ab-initio modelin…
Fast expansion into harmonics on the disk: a steerable basis with fast radial convolutions
Nicholas F. Marshall, Oscar Mickelin, Amit Singer
We present a fast and numerically accurate method for expanding digitized images representing functions on supported on the disk $\{x \in \mathbb{R}^2 : |x|…
On a linearization of quadratic Wasserstein distance
Philip Greengard, Jeremy G. Hoskins, Nicholas F. Marshall +1
This paper studies the problem of computing a linear approximation of quadratic Wasserstein distance . In particular, we compute an approximation of the negative homogeneous w…
An optimal scheduled learning rate for a randomized Kaczmarz algorithm
Nicholas F. Marshall, Oscar Mickelin
We study how the learning rate affects the performance of a relaxed randomized Kaczmarz algorithm for solving , where is a consistent linear s…
A fast simple algorithm for computing the potential of charges on a line
Zydrunas Gimbutas, Nicholas F. Marshall, Vladimir Rokhlin
We present a fast method for evaluating expressions of the form where are…