查询词典 projection gradient method

Conjugate gradient method is a method for solving nonlinear optimization problems, especially large-scale problems.

共轭梯度法是求解无约束优化问题的一种重要的方法，尤其适用于大规模优化问题的求解。

Conjugate gradient method is a significant method in solving nonlinear optimization problems.

共扼梯度法是求解非线性优化问题的一种重要方法。

Based on the genetic algorithm and the method of conjugate gradient, a method for optimizing the model parameters is developed.

基于遗传算法和共轭梯度法确定最优化模型参数，利用该模型拟合了2种硫化胶的应力松弛系数和永久变形率随时间变化的数据。

And it is solved by using the conjugate gradient method, in which the calculation precision is almost the same as that in the SVD method.

最后通过对模拟数据和实测数据进行反演试算，验证本计算方法是可行的。

So based on the characteristics of gradient descent method and layer by layer optimization method, we made some modifications and improvements on both of them.

本文就是针对梯度下降法和逐层优化法的特点，在现有算法的基础上，做了一些改进和修正。

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。

Moreover, a new fast learning method of fuzzy systems both are based on genetic algorithms and gradient descent method is proposed.

引 言最近几年来，诸如模糊推理、模糊建模、模糊逻辑控制器等模糊系统得到了广泛的研究和应用。

Currently, the learning algorithms for training Feedforward Multilayer Neural Network can be classified into two categories: gradient descent method and layer by layer optimization method.

目前前向神经网络的学习算法主要分为两类：梯度下降算法和逐层优化算法。

In the paper we analyze and realize using MATLAB two inversion techniques (the gradient method and the DFP method), and check the two techniques , too.

本文分析并用MATLAB实现了两种反演算法，并对这两种算法进行了验模，以评定算法的准确性。

Based on DFP gradient method and the theory of elastic visco-plasticity and that of finite element method, the deficiency and objection existing in present stochastic back analysis methods have been deeply studied in this paper in order to provide much more reliable parameter for the mechanical analysis of geological engineering structures.

本文基于变尺度梯度优化方法和弹-粘塑性原理及其有限元基本理论，针对随机反分析方法存在的缺陷和不足进行研究，以期为实际岩土工程结构的力学分析提供更加可靠的材料参数。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。