查询词典 gradient method

The status of gradient projection method of redundant manipulator is analysed, the effect and selection methods of the scale factor of the homogeneous solution is expatiated.

分析了冗余度机器人梯度投影法的研究现状，阐述了齐次解的比例因子的作用及其选择方法，提出了一种实时连续变化的比例因子计算方法。

In Chapter 5, the authors study the convergence properties of the gradient projection method for the constrained optimization problem. In this chapter, a new step-size rule, which avoids fulfiling the classical line search and includes choosing a constant as the step size as a special case, is presented and analyzed.

第五章研究了求解约束最优化问题的梯度投影方法，在步长的选取时采用了一种新的策略，这种策略不需要进行传统的线搜索且包含步长取常数这种特例，在较弱的条件下，证明了梯度投影方法的全局收敛性。

In order to efficiently handle multi-constraints, a vector function inner product is defined in the zero level set and a gradient projection method is constructed, and the necessary condition satisfied by the optimal solution is proved.

在这些研究的基础上，提出了适用于一般目标函数、多材料、多约束和多载荷工况的结构拓扑优化的水平集算法4.1，并给出了刚性结构、柔性机构和复合材料微结构设计算法5.1、6.1和7.1，以及大量的数值算例。

Since the gradient projection method was proposed, it has been paid much attention to because it has the following three advantages: 1 its structure is very simple, 2 it is easily operated, 3 its each computional step is iterated explictly and doesn't need to solve complex linear programming or quadratic programming problems.

梯度投影方法自提出以来，由于它简单易行，计算的每一步都是显式迭代，而不必去解复杂的线性规划或二次规划问题，因此颇为人们注意。

Considering the fact that the self constraints of the design variables can be formulated as the linear functions in the present process optimization, the nonlinear part of the constraints is dealt by introducing the concept of active constraint set. The linear part is dealt by the gradient projection method specially.

同时考虑到现在的优化求解问题中，设计变量自身的约束可以合理地表示成线性函数的形式，因此对于优化问题的非线性约束部分，通过引入活动约束集的概念进行处理；而对于线性边界约束，则采用梯度投影法作专门处理。

A general super memory gradient projection method was generalized to solve the nonlinear programming problems about the nonlinear equality constraints and in equality constraints by using general projection matrix.

利用广义投影技术，将求解无约束规划的超记忆梯度算法推广，建立了求解带非线性等式和不等式约束优化问题的一种超记忆梯度广义投影算法，并证明了算法的收敛性。

In this dissertation, incorporating the level set algorithm, the gradient projection method, the nonlinear mapping technique, the return mapping algorithm and the mean curvature flow technique into topological optimization theory, a level set algorithm for topology optimization with multi-material structures is put forward, which can optimize a problem with general objective functions, multi-constraints, multi-materials and multi-load cases.

同时，又将拓扑导数理论和水平集算法结合起来，提出了结构拓扑优化的拓扑导数与水平集算法，进一步提高了计算效率。

In this paper,a new adaptive image interpolation method based on edge,introducing rectangular interpolation and quincunx interpolation,putting forward the gradient weight function,motivated by the work of Nira Shezaf et al.,is presented.

引入了一种改进的保留图像边缘特征的自适应缩放插值方法，在Nira Shezaf等人提出的自适应插值算法的基础上进行了改进。

The steps of Reduced Gradient optimal method is used on solving the Least Squares theory model. At some situation, some nodes pressure and supply of all water-supply sources are measured in Xi'ning (resistance parameter of all pipes are known). By using the pressure of the experiment and optimal measure points, the state simulation is done respectively to get all nodes' pressure.

利用简约梯度优化法求解给水管网状态估计的最小二乘数学模型，实测某一工况下西宁市配水管网部分节点水压H_0、各水源供水量分别用优化选择的测压点水压和按经验选择的测压点水压估计所有节点的水压，对西宁市配水管网进行了状态估计。

Steepest gradient descent method had been mostly used in the iteration process of the error energy function during conventional programming problems.

传统的规划问题中，一般使用最陡梯度算法进行误差能量函数的迭代过程。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。