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MATRIX ANALYSES ON THE DAI–LIAO CONJUGATE GRADIENT METHOD

Published online by Cambridge University Press:  09 May 2019

Z. AMINIFARD
Affiliation:
Department of Mathematics, Faculty of Mathematics, Statistics and Computer Science, Semnan University, PO Box 35195-363, Semnan, Iran email aminisor@semnan.ac.ir, sbk@semnan.ac.ir
S. BABAIE-KAFAKI*
Affiliation:
Department of Mathematics, Faculty of Mathematics, Statistics and Computer Science, Semnan University, PO Box 35195-363, Semnan, Iran email aminisor@semnan.ac.ir, sbk@semnan.ac.ir
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Abstract

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Some optimal choices for a parameter of the Dai–Liao conjugate gradient method are proposed by conducting matrix analyses of the method. More precisely, first the $\ell _{1}$ and $\ell _{\infty }$ norm condition numbers of the search direction matrix are minimized, yielding two adaptive choices for the Dai–Liao parameter. Then we show that a recent formula for computing this parameter which guarantees the descent property can be considered as a minimizer of the spectral condition number as well as the well-known measure function for a symmetrized version of the search direction matrix. Brief convergence analyses are also carried out. Finally, some numerical experiments on a set of test problems related to constrained and unconstrained testing environment, are conducted using a well-known performance profile.

Information

Type
Research Article
Copyright
© 2019 Australian Mathematical Society