Stephen J. Wright

activity

20012024

most citedTraining Set Debugging Using Trusted Items

26 citations · 56 across the 18 of their papers we have counts for

collaborators

Showing 2019 · math.NAShow all

3 papers · 2 filters

math.NA2019★ 1 cited

Schwarz iteration method for elliptic equation with rough media based on random sampling

Ke Chen, Qin Li, Stephen J. Wright

We propose a computationally efficient Schwarz method for elliptic equations with rough media. A random sampling strategy is used to find low-rank approximations of all local solut…

math.NA2019

Structured random sketching for PDE inverse problems

Ke Chen, Qin Li, Kit Newton +1

For an overdetermined system $Ax \approx b$ with $A$ and $b$ given, the least-square (LS) formulation $\min_x \, \|\mathsf{A}\mathsf{x}…

math.NA2019

A low-rank Schwarz method for radiative transport equation with heterogeneous scattering coefficient

Ke Chen, Qin Li, Jianfeng Lu +1

Random sampling has been used to find low-rank structure and to build fast direct solvers for multiscale partial differential equations of various types. In this work, we design an…