梯度法

In the method, a optimization model of a ventilating network is put forward by taking the minimizing squared sum of algebraic sum of the ventilation pressure of all branches in a independent circuit shoot all independent circuits as object function, therefore a new algorithm of ventilation network optimization is obtained.

该方法通过使所有独立回路分支风压代数和的平方和最小化的方法，建立了通风网络解算优化模型，并用梯度法对该模型进行解算，获得了一种新的风网解算算法。

In this thesis, we mainly discuss the algorithm and the theory of conjugate gradient method .

本文主要研究了共轭梯度法的算法和理论，得到了一些理论和数值结果。

Objective To study the method of preparing Vinorelbine Bitartrate in liposomes by pH gradient method.

目的 优选pH梯度法制备重酒石酸长春瑞滨脂质体的制备工艺。

Generally, the PRP method is regarded as one of the most effective CG methods.

在所有的共轭梯度法中，PRP方法被认为是数值表现最好的方法之一。

Application of complex conjugate gradient method and fast Fourier transform to study multitudinous scattering in near-field optics.

利用共轭梯度法与快速傅立叶变换相结合的方法来研究近场多体散射问题。

On the other hand, an iterative hard shrinkage algorithm is obtained by using the generalized conditional gradient method, as well as convergent theorems for Solutions and stopping criterion.

此外，利用广义条件梯度法得到了迭代硬阈值算法，并给出了解的收敛性定理和停止准则。

Finally, the numerical results show this class of conjugate gradient methods is very efficient.

然后证明三种新算法在强Wolfe线搜索下的全局收敛性，数值验证表明这类共轭梯度法是比较有效的。

Nonlinear conjugate gradient methods are a class of important methods for optimization.

中文摘要：非线性共轭梯度法是最优化中一种重要的方法。

In this paper a class of new conjugate gradient methods are presented, with which the global convergence with generalized Wolfe line search is proven.

本文提出一族新的共轭梯度法，证明了其在推广的Wolfe非精确线搜索条件下具有全局收敛性。

The two Armijo-type line searches proposed in Chapter 4 are shown to guarantee the global convergence of the class of conjugate gradient methods.

在第四章提出的两种Armijo型线搜索下，针对不同的线搜索参数分别讨论了共轭梯度法簇的全局收敛性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。