Title
An energy-based AMG coarsening strategy.
Abstract
Algebraic multi-rid (AMG) is an iterative method that is often optimal for solving the matrix equations, that arise in a wide variety of applications, including discretized partial differential equations. It automatically constructs a sequence of increasingly smaller matrix problems that hopefully enables efficient resolution of all scales present in the solution. The methodology is based on measuring low a so-called algebraically; smooth error value at one point depends oil its value at another. Such a concept of strength of connection is well understood for operators whose principal part is an M-matrix; however, the strength concept for more general matrices is not yet clearly understood, and this lace of knowledge limits the scope of AMG applicability. The purpose of this paper is to motivate a general definition of strength of connection, discuss its implementation, and present the results of initial numerical experiments. Copyright (c) 2006 John Wiley & Sons, Ltd.
Year
DOI
Venue
2006
10.1002/nla.480
NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS
Keywords
Field
DocType
multigrid,AMG,multigrid coarsening
Discretization,Mathematical optimization,Algebra,Matrix (mathematics),Iterative method,Operator (computer programming),Partial differential equation,Multigrid method,Mathematics,Principal part
Journal
Volume
Issue
ISSN
13
2-3
1070-5325
Citations 
PageRank 
References 
16
1.28
17
Authors
6
Name
Order
Citations
PageRank
J. Brannick1444.42
Marian Brezina229943.34
S. P. MacLachlan39811.78
Thomas A. Manteuffel434953.64
STEPHEN F. MCCORMICK525830.70
John W. Ruge617923.34