EVENT

Talk by Malena Landman from University of Bath: "Krylov methods and regularisation for large-scale inverse problems"

Date:

Sep. 7 (Fri.)

Time:

15:00-16:00

Venue:

National Institute of Informatics
Room 1208 (12th floor), NII

Speaker:

Malena Sabate Landman (University of Bath)

Title:

Krylov methods and regularisation for large-scale inverse problems

Abstract:

Inverse problems are ubiquitous in many areas of Science and Engineering and lead, once discretised, to ill-conditioned linear systems, often of huge dimensions. In order to obtain a meaningful approximation of their solutions, one might decide to add regularisation. That is, replacing the original system by a similar problem which has better numerical properties. After briefly surveying some standard regularisation methods, both iterative (such as many Krylov methods) and direct (such as the Tikhonov method), I will focus on particular cases in which preconditioning is used as a regularisation tool.

Contact:

Yuji Nakatsukasa ( nakatsukasa [at] nii.ac.jp )