Hestenes-Stiefel和戴元共轭梯度法的杂交

Yoksal A. Laylani, Hisham M. Khudhur, Edrees M. Nori, K. Abbo
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引用次数: 0

摘要

本文讨论了共轭梯度法,这是本次讨论的主题,通常用于无约束优化。在研究和实现共轭梯度算法的过程中,假设下降条件为真是标准做法。尽管这种方法很少会导致搜索路线向下倾斜,但这种假设是常规的。作为这项研究的结果,我们提出了一种改进的混合共轭梯度技术。该方法是戴元和赫斯滕斯·斯蒂费尔方法的凸组合。Wolfe线搜索同时表现出下降性和全局收敛性。数值数据表明,所提出的策略是有效的。
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A hybridization of the Hestenes-Stiefel and Dai-Yuan Conjugate Gradient Methods
The paper in discusses conjugate gradient methods, which are often used for unconstrained optimization and are the subject of this discussion. In the process of studying and implementing conjugate gradient algorithms, it is standard practice to assume that the descent condition is true. Despite the fact that this sort of approach very seldom results in search routes that slope in a downward direction, this assumption is made routinely. As a result of this research, we propose a revised method known as the improved hybrid conjugate gradient technique. This method is a convex combination of the Dai-Yuan and Hestenes-Stiefel methodologies. The descending property and global convergence are both exhibited by the Wolfe line search. The numerical data demonstrates that the strategy that was presented is an efficient one.
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CiteScore
1.30
自引率
28.60%
发文量
156
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