【数学学院】Convergence Proof of FAS for Nonlinear Problems

  • 日期：2018-08-20        来源：四川大学数学学院         点击数：


报告题目: Convergence Proof of FAS for Nonlinear Problems

报告人：Prof. Long Chen

单位：University of California at Irvine,Beijing Institute for Scientific and Engineering Computing (BISEC), Beijing University of 

Technology

时间：2018年8月20日（周一）下午4:30-5:30

地点：数学学院西303报告厅

摘要: Full Approximation Scheme (FAS) is a widely used multigrid method for nonlinear problems. In this talk, we shall provide a new 

framework to analyze FAS for convex optimization problems and improve the original method. We view FAS as an inexact version of nonlinear

multigrid methods based on space decomposition and subspace correction. The local problem in each subspace can be simplified to be a linear

and one gradient decent iteration is enough to ensure a linear convergence.



来源链接：http://math.scu.edu.cn/info/1062/3651.htm