文件名称：Computational Comparision of serval CG methods
文件大小：52KB
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更新时间：2022-04-16 13:04:41
Dai–Liaoconjuga Rayleighquotien
a modified four–term extension of the Dai–Liao conjugate gradient method is proposed, in which a revision on the family of one–parameter choices for optimal parameters t∗ θ(JIMO,13(2):649–658,2017) is made. Specifically, an adaptive criterion involved in the Rayleigh quotient of the iteration matrix of search direction is discussed, which sustantially benefits acceleration convergence. Sufficient descent condition of the modified search direction and global convergence are saisfied.