下降法

词组短语

descent method

与下降法相关的网络例句 [注：此内容来源于网络，仅供参考]

Two ways are used to design the network,the one is the direct energy descent method,and the other is the gradient descent method .

有两种方法可以用来设计网络，一是能量下降法，另一个是梯度下降法。

This chapter investigates global convergence properties of the conjugate descent method with the two Armijo-type line searches.

进而证明了这两种Armijo型线搜索可保证共轭下降法的下降搜索方向的充分下降性。

At same time simplex method,nonlinear least-squaremethod and DFP and BFGS and so on were used to design three-layerand five-layer coatings.

同时利用单纯形法、最小二乘法、二次规划法、最速下降法、DFP法、和BFGS法优化设计了三层增透膜系、五层膜系。

The choice of step-length strongly affects the convergence rate of the Gradient Method, the classical Gradient Method—the method of steepest descent converges rather slowly in most cases, the poor behavior of the method is due to the optimal choice of step-length.

步长的选取对梯度法的收敛速度影响非常大，经典的梯度法-最速下降法在大多数情况下收敛得相当慢的原因在于最优步长的选取。

Until recently, the convergence of the Rosen"s arithmetic has been proved. The projection gradient method is the generalization of Steepest decent method to constraint problem. So it does have a faster convergence speed that the fastest decent method . To solve the problem, many researchers have generalizat the well-developed optimization with unconstraint to the Rosen"s gradient method. The conjugate gradient method is one of success to solve the problem.

投影梯度法是最速下降法对约束问题的推广，因此没有较快的收敛速度，为了解决这个问题很多中外学者把发展得比较成熟的无约束最优化算法作类似的推广，其中共轭梯度方法是近年发展的很成熟的方法，它具有计算简单，算法结构好，计算量少，具有良好的收敛性等优点，而Rosen投影梯度法的提出使寻找下降方向变得简单。

We transforms the special linear system of strict inequalities into three kinds of minimax problems, and then solves it with the aggregate function method assisted with some corresponding method. At last the numerical experiment is done under the environment of matlab.

我们将其转化为三种形式的Minimax问题，对转化后的三种Minimax问题，用凝聚函数法分别将其目标函数光滑化，并分别用带Armijo不精确线搜索的最速下降法、带自适应参数修正的凝聚函数法以及既约梯度法来求解。

Fist, comprehensive analysis on the current study on data processing is made, and characters of Newton methods about nonlinear surveying and mapping data processing are discussed, and then new solutions to parameters estimate with multi-sources, multi-types, multi-dimension, multi-precision bynonlinear least square are presented such as PSB algorithm, digital continuation and generalized digital continuation algorithm, cone model method, tensor analysis method, GCMA(mixed algorithm of gradient method and conjugate gradient method), combining algorithm based on Newton method and gradient method and confidence region and so on, and a new fast difference iterative algorithm is proposed towards parameters estimation containing random parameters in nonlinear models, and a new solutions to nonlinear least squares surveying and mapping adjustment by parameters estimation both considering the random and nonrandom parameters is presented after studying on nonlinear data processing in deformation monitoring, and at last primary analysis on error propagation of spatial data is made and approximate error propagation formula and error analysis formula to length and area are proposed.

首先比较全面分析了目前测量数据处理理论的研究现状，讨论了牛顿类方法在处理非线性模型参数估计方面的特点，研究并给出了求解多源、多类型、多维、多精度、非线性最小二乘测量平差参数估计的若干种新方法，这包括PSB算法、数值延拓及其广义数值延拓算法、锥模型法、张量分析法、基于最速下降法和牛顿法的组合算法、基于最速下降

First, some critical problems in crystal growth like crystal seeding, Zn dephlegmation, geometrical selection and temperature fields are discussed in theory, and the possible kinds of defects appeared in crystal growth progress and the reasons are carefully researched. To control the concentration of Cd vacancies, a new method by which the Cd vacancies were compensated with excess Cd in the Cd rich starting materials has been developed, and a new kind of two-area tube furnace with good linear temperature distribution was designed.

首先，本文从理论上对坩埚下降法生长碲锌镉单晶体中的成核、Zn分凝、几何淘汰生长与温场等关键性问题进行了讨论，对在生长过程中可能出现的各种缺陷类型和形成原因进行了详细分析，提出了碲锌镉单晶体生长过程中Cd空位缺陷控制原理及方法，并针对坩埚下降法生长特点自行设计了两区域独立加热管式生长炉，获得具有较好线性分布的温场。

To the same sample production, using the iodimtry method, freezing point decent method, HPLC and enzymic method, the difined hydrolytic percentage is 63.2%,62%,61%,61.8% separatedly.

对同一样品运用碘量法、冰点下降法、高效液相色谱法、酶催法进行乳糖水解率的测定，测得水解率分别为63.2％、62％、61％、61.8％。

This principle eradicates local minima or invalid solutions caused by consistent reduction of the energy function via the usual gradient descent method.

利用这一理论，可以克服由于梯度下降法所导致的网络能量函数总是下降，从而使网络陷入局部极小值或不可行解的现象。

与下降法相关的网络解释 [注：此内容来源于网络，仅供参考]

kryoscopy;cryoscopy：冰点下降法

高山矮曲林 krummholz | 冰点下降法 kryoscopy;cryoscopy | 葛藤 kudzu-vine;Pueraria thunber-giana Benth.

cryoscopic method; cryoscopy：冰点下降法

冰点测定器 cryoscope | 冰点下降法 cryoscopic method, cryoscopy | 冷盐 cryosel

descent method：下降法

descent 下降 | descent method 下降法 | description 描述

steepest descent method：最速下降法

最速下降法(steepest descent method)由法国数学家Cauchy于1847年首先提出. 在每次迭代中,沿最速下降方向(负梯度方向)进行搜索,每步沿负梯度方向取最优步长,因此这种方法称为最优梯度法. 最速下降法是一种最基本的算法,

steepest descent method：最陡下降法; 最速下降法

stationary point 驻点 | steepest descent method 最陡下降法; 最速下降法 | Stochastic Optimization:随即最优化

method of steepest descent：最速下降法

同"贪心类"算法(如最速下降法)(Method of Steepest Descent)比较,基于Metropolis接受准则的模拟退火法可以避免搜索过程陷入局部极小,并最终趋于问题的全局最优解.

method of steepest descent：最陡下降法

method of perturbation 微扰法 | method of steepest descent 最陡下降法 | method of successive approximation 逐次逼近法

arm rappel：手臂下降法

arm locks/弯曲手臂固定法/ | arm rappel/手臂下降法/ | artificial anchor/人工确保点/

saddle point method：鞍点法,最速下降法

saddle point game 鞍点对策 | saddle point method 鞍点法,最速下降法 | saddle point theorem 鞍点定理

cryoscopic method：凝固点下降法

cryoscopic constant 凝固点下降常数 | cryoscopic method 凝固点下降法 | cryoscopic titration 凝固点下降滴定