70 citations · 97 across the 17 of their papers we have counts for
Showing 2013Show all
3 papers · 1 filter
math.NA2013★ 5 cited
Data completion and stochastic algorithms for PDE inversion problems with many measurements
Farbod Roosta-Khorasani, Kees van den Doel, Uri Ascher
Inverse problems involving systems of partial differential equations (PDEs) with many measurements or experiments can be very expensive to solve numerically. In a recent paper we e…
cs.CV2013
Faster gradient descent and the efficient recovery of images
Hui Huang, Uri Ascher
Much recent attention has been devoted to gradient descent algorithms where the steepest descent step size is replaced by a similar one from a previous iteration or gets updated on…
math.NA2013★ 70 cited
Improved bounds on sample size for implicit matrix trace estimators
Farbod Roosta-Khorasani, Uri Ascher
This article is concerned with Monte-Carlo methods for the estimation of the trace of an implicitly given matrix whose information is only available through matrix-vector produ…