ISSN 2234-8417 (Online) ISSN 1598-5857 (Print)

 2014's 32,3-4(May)

 Performance comparison of preconditioned iterative methods with direct preconditioners By Jae Heon Yun, Hyo Jin Lim ..........1517

Generic Number - 1517
References - 0
Written Date - May 16th, 14
Modified Date - May 16th, 14
Visited Counts - 706

Original File
 Summary In this paper, we first provide comparison results of preconditioned AOR methods with direct preconditioners $I+\beta L$, $I+\beta U$ and $I+\beta (L+U)$ for solving a linear system whose coefficient matrix is a large sparse irreducible L- matrix, where $\beta > 0$. Next we propose how to find a near optimal parameter $\beta$ for which Krylov subspace method with these direct preconditioners performs nearly best. Lastly numerical experiments are provided to compare the performance of preconditioned iterative methods and to illustrate the theoretical results.

ÇÐÈ¸ : Á¤º¸Àü»êÀÀ¿ë¼öÇÐÈ¸(KSICAM) (±¸: KSCAM & Korean SIGCAM)
http://www.springer.com/journal/12190
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