A New Preconditioning Technique of the LSQR Method for Solving the Linear Systems

Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
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DSGT02_012

تاریخ نمایه سازی: 19 تیر 1398

Abstract:

The LSQR method is an attractive method for solving the linear systems. However,LSQR may converge slowly or even stagnate due to a limited Krylov subspace. To ameliorate this drawback, a polynomial preconditioned variant of LSQR is presented.Numerical experiments from real applications are used to validate the e ectiveness ofthe proposed method.

Authors

Maryam Mojarrab

Department of Mathematics, Faculty of Mathematics,University of Sistan and Baluchestan, Zahedan, Iran

Razie Sargazi

Department of Mathematics, Faculty of Mathematics,University of Sistan and Baluchestan, Zahedan, Iran