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2018-09-07 数値線形代数セミナー:Malena Landman

投稿者:  中務 佑治(国立情報学研究所)
会場: 国立情報学研究所1208室
概要: 逆問題に対するKrylov部分空間法,regularizationの講演

日程 2018年 9月 7日(金) 15:00-16:00
会場 国立情報学研究所1208室
本文 Malena Sabate Landmanさん(University of Bath)に以下のようにセミナー発表してもらいます.Silvia GazzolaさんのPhD学生で,数値線形代数や(画像処理等の)逆問題にご興味のある方向けの内容になります.是非ご参加下さい.
講演者 Malena Sabate Landman (University of Bath, web)
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.
問い合わせ先 中務 佑治
e-mail: nakatsukasaseparatornii.ac.jp