Homotopy method for getting a local minimum of unconstrained non-convex programming
同伦方法求解无约束非凸优化问题的局部极小
It is emphazised that the local minimum problem caused by null resultant force or U shape obstacle is studied.
针对自治式水下潜器(AUV)局部路径规划问题,基于虚拟势场理论研究,提出了虚拟力概念,并设计了一种改进型虚拟势场局部规划算法,解决了经典虚拟势场能算法中存在的零合力与U型障碍的局部极小问题:当AUV陷入局部极小时通过调用相应的逃避算法来摆脱局部极点。
In this paper, we study several models of Hopfield neural network to overcome the difficulties of the invalid solution and local minimum in solving the Travelling Saleman Problem(TSP).
针对Ｈｏｐｆｉｅｌｄ神经网络在求解巡回推销员问题（ＴＳＰ）时出现的无效解和局部极小值问题，本文结合网络动态分析，利用权矩阵特征值在网络内部动力特性与外在解表现形式之间的关联作用，通过各特征值间关系协调，对基于原模型的权值修正方案作进一步理论分析与改进，探讨网络收敛于全局有效解的途径，并在全国３１省、市、自治区ＴＳＰ模拟中收到较好效果。
Aimed at particle swarm optimization(PSO) algorithm being easily trapped into local minima value in multimodal function,a rotating surface transformation(RST) method was proposed.
针对粒子群优化算法(PSO)应用于多极值点函数易陷入局部极小值,提出旋转曲面变换(RST)方法。
Particle Swarm Optimization(PSO) algorithm is a population-based global optimization algorithm,but it is easy to be trapped into local minima in optimizing multimodal function.
粒子群优化算法应用于多极值点函数优化时,存在陷入局部极小点和搜寻效率低的问题。
Aim To study the standard BP algorithm s local minima and learning speed problems and propose the scheme for improvement.
目的 对 BP学习算法中存在的大量局部极小点以及收敛速度慢问题进行研究并提出相应的改进方案 。
To avoid the disadvantage of artificial potential field, a method was put forward to separate the region which will result in local minimization by some special points.
针对人工势场法中局部极小问题产生的根源,提出将现场中容易导致局部极小问题的区域通过一些人为设置的特征点隔离出来。
When the mobile robot enters into the region of local minimization,"follow-wall " begins to work.
利用人工势场法进行移动机器人路径规划是十分有效的,在使用人工势场法进行避障的时候,由于移动机器人对周围环境信息的感知具有局限性,容易导致局部极小问题的出现。
This paper sums up some parameter improve methods from a large number of references which were relative to these problems(①to meliorate the convergence rate mainly by improving the learning rate method;②to overcome the problem of local minimization from three aspects:to choos.
然而它的两个突出问题——收敛速度慢、易陷入局部极小点,制约了它的应用。
The training process of Back Propagation Neural Network (BPNN) is easily converged at a local minimum, which slows the training process sharply.
但在ＢＰ网络的训练过程中 ,如何跳出局部极小点是一个难点 ,对此前人已有一些研究成果 ,其中包括改进的梯度下降搜索法 (ｇｒａｄｉｅｎｔｄｅｓｃｅｎｄｒｅｓｅａｒｃｈ ,ＧＤＲ) [5] 、模拟退火法 (ｓｉｍｕｌａｔｅｄａｎｎｅａｌｉｎｇ ,ＳＡ) [6]和ＥＧＡ算法 (ｅｘｔｅｎｄｅｄｇｅｎｅｔｉｃａｌｇｏｒｉｔｈｍ)等[7,8] 。
The advantages of applying simulated annealing algorithm to short-term load forecast include less model complexity,high forecasting accuracy and global optimal property,which alleviate the tendency of traditional BP algorithm to be trapped in local minimum.
将模拟退火算法应用于短期负荷预测领域,其特点是模型简单、运算效率高,并具有较好的全局最优性能,从而很好地克服了传统BP算法容易陷入局部极小点的缺陷。
Then some defects such as slow convergence rate and getting into local minimum in BP algorithm are pointed out,and the root of the defects is presented.
分析了BP算法的基本原理,指出了BP算法具有收敛速度慢、易陷入局部极小点等缺陷以及这些缺陷产生的根源。
A novel global optimization training algorithm was constructed for the feed-forward neural networks to which the BP algorithm is easy to fall into the local minimum point for improper choice of initial weights.
针对前向神经网络BP算法由于初始权值选择不当而陷入局部极小点这一缺陷,提出新的全局优化训练算法。
A stationary point which is neither a local maximum nor a local minimum point is called a saddle point.
一个既不是局部极大点又不是局部极小点的平稳点称为一个鞍点。
A New Research on Escaping from Local Minima in Back-Propagation Algorithm;
BP神经网络中一种逃离局部极小点的方法研究
Solving Local Minimum Problems in LGB Arithmetic by Analog Anneal;
用模拟退火法解决LBG算法陷入局部极小的问题
Some Methods for Local Minimum of Nonlinear Integer Programming
几种求解非线性整数规划的局部极小点的算法
Homotopy method for getting a local minimum of unconstrained non-convex programming
同伦方法求解无约束非凸优化问题的局部极小
We analyzed various improved methods because of the problem that conventional BP algorithm was liable to trap in local minimum value and was slow rate of convergence.
针对传统即算法易陷入局部极小和收敛速度慢的问题，分析了各种改进方法。
The Compact Minimal Submanifolds in Locally Symmetric Space;
关于局部对称空间中的紧致极小子流形
Complete Minimal Submanifolds immersed in a Locauy Symmetric Riemannian Manifold;
极小浸入在局部对称黎曼流形中的完备子流形
Sectional Curvature of Compact Minimal Submanifolds of Locally Symmetric Manifolds;
局部对称空间中的紧致极小子流形的截面曲率
Ricci Curvature of Compact Minimal Submanifolds in Locally Symmetric Space
局部对称空间中的紧致极小子流形的Ricci曲率
A Local Boundedness Preparation Theorem of a Certain Functional Minimizer on Newton Spaces
Newton空间中某类泛函极小的局部有界性预备定理
AN EXTREME MINIMUM FIXED POINT THEOREM FOR SET-VALUED MAPPING IN THE LOCAL CONVEX SPACE
局部凸空间中集值映射的一个极小不动点定理
Therefore, an algorithm of PD signal reconstruction based on modulus maximum wavelet domain is presented in this paper.
为此,该文提出一种基于模极大值小波域的局部放电信号重构算法。
Estimation of the Length of the Second Fundamental from for Complete Minimal Submanifold in Locally Symmetric Spaces;
局部对称空间中完备极小子流形的第二基本形式长度估计
A Pinching Theorem of Ricci Curvature for Minimal Submanifolds of Locally Symmetric Space
关于局部对称空间中极小子流形的一个Ricci曲率pinching定理
The Compact Minimal Submanifolds in Locally Symmetric Space
局部对称黎曼流形中的紧致极小子流形的Ricci曲率
focal proliferative glomerulonephritis
局部增殖性肾小球肾炎
Local and Global Almost Sure Central Limit Theorems on Extremes;
极值的局部及整体几乎处处中心极限定理