搜索结果: 1-10 共查到“理学 Wolfe”相关记录10条 . 查询时间(0.14 秒)
本文在Fletcher-Reeves共轭梯度法的基础上提出一类修正的Fletcher-Reeves共轭梯度法，其在广义Wolfe线搜索下具有充分下降性和全局收敛性. 大量数值试验表明，新方法对于给定的测试函数在数值效果上明显优于Fletcher-Reeves共轭梯度法.
A Nonlinear Conjugate Gradient Algorithm with An Optimal Property and An Improved Wolfe Line Search
conjugate gradient method memoryless BFGS method unconstrained optimization global convergence Wolfe line search
2012/8/10
In this paper, we seek the conjugate gradient direction closest to the direction of the
scaled memoryless BFGS method and propose a family of conjugate gradient methods for
unconstrained optimizatio...
Wolfe线搜索下一个全局收敛的混合共轭梯度法
无约束优化 Wolfe非精确线搜索 共轭梯度法 全局收敛性
2012/4/9
对无约束优化问题, 本文给出了一个新的混合共轭梯度法公式. 在标准Wolfe非精确线搜索下,证明了由新公式所产生的算法具有下降性和全局收敛性, 并对算法进行了数值试验, 其结果表明该算法是有效的.
An Optimal Approach for Measuring the Integrated Sachs-Wolfe Effect
Cosmology and Extragalactic Astrophysics (astro-ph.CO) General Relativity and Quantum Cosmology (gr-qc)
2010/12/28
One of the main challenges of modern cosmology is to understand the primordial fluctuations of the early Universe and the nature of the mysterious dark energy which causes the cosmic acceleration. The...
Parameter estimation biases due to contributions from the Rees-Sciama effect to the integrated Sachs-Wolfe spectrum
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/24
The subject of this paper is an investigation of the nonlinear contributions to the spectrum of the integrated Sachs-Wolfe (iSW) effect. We derive the corrections to the iSW-auto spectrum and the iSW-...
强Wolfe-Powell线搜索下共轭梯度法的全局收敛性
共轭梯度法 线搜索 充分下降性 全局收敛性
2009/11/24
给出一类求解非线性无约束优化问题的共轭梯度新算法。 在强Wolfe-Powell线搜索下所给公式具有充分下降性, 所给该新算法具有全局收敛性。
拟不变凸集值优化的Kuhn-Tucker条件与Wolfe对偶
拟不变凸集值函数 伴随上图导数 最优性条件 对偶
2008/2/11
卷期页码：第27卷 第12期
(2006年12月) P.1447
文章编号：1000-0887(2006)12-1447-10
拟不变凸集值优化的Kuhn-Tucker条件与Wolfe对偶
盛宝怀1，刘三阳2
1.绍兴文理学院 数学系, 浙江 绍兴 312000；2.西安电子科技大学 应用数学系,西安 710071
摘要：研究了拟不变凸集值优化最优性的Kuhn-Tucker条件及Wo...
Wolfe搜索下记忆梯度法的收敛性
无约束优化 记忆梯度法 Wolfe线性搜索 收敛性
2007/12/11
本文研究无约束优化问题的记忆梯度算法, 分析了Wolfe搜索下该算法的全局收敛性和线性收敛速度. 初步数值试验结果表明了算法的有效性.
CONVERGENCE PROPERTIES OF CONJUGATE GRADIENT METHODS WITH STRONG WOLFE LINESEARCH
Conjugate gradient algorithms global co
2007/8/7
In this paper, we investigate the convergence property of the conjugate gradient algorithms which depend on the search directionsd_1=-g_1, d_{k+1}=-g_{k+1}+\beta_k d_k ,k\geq 1, by using different cho...
A NEW SUFFICIENT CONDITION FOR THE CONVERGENCE OF THE DFP ALGORITHM WITH WOLFE LINE SEARCH
Global convergence DFP algorithm Wolfe
2007/8/7
The DFP algorithm is one of the mest famous numerical algorithms for unconstrained optimization.It is an open problem whether DFP algorithm with inexact line searches is globally convergent. In this p...