On the truncated conjugate gradient method

被引:68
|
作者
Yuan, Y [1 ]
机构
[1] Chinese Acad Sci, Inst Computat Math & Sci Engn Comp, State Key Lab Sci & Engn Comp, Beijing 100080, Peoples R China
关键词
unconstrained optimization; trust region; conjugate gradient;
D O I
10.1007/s101070050012
中图分类号
TP31 [计算机软件];
学科分类号
081202 ; 0835 ;
摘要
In this paper; we consider the truncated conjugate gradient method for minimizing a convex quadratic function subject to a ball trust region constraint. It is shown that the reduction in the objective function by the solution obtained by the truncated CG method is at least half of the reduction by the global minimizer in the trust region.
引用
收藏
页码:561 / 573
页数:13
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