极小

Its lithe outward appearance, can display the highest lifting ability in the minimum space.

它轻盈的外观，能在极小的空间内发挥最高的举升能力。

Therefore, there exist the problems of slow convergence speed and local optimum.

由于混沌具有其独特性质，如内随机性、遍历性和规律性，特别是混沌的遍历性特点可作为搜索过程中避免陷入局部极小的一种优化机制。

To overcome the disadvantageous of the BP algorithm, slow convergence speed and easy to fall into local small extremum, self-adjustable learning rate and momentum method are used to improve the performance of BP algorithm.

针对BP算法收敛速度慢和容易陷入局部极小值的缺点，利用自适应学习率和附加动量法对基本的BP算法进行了优化，对学习率和动量因子的选择进行了探讨。

We obtain definitions for local maximum value and local minimum value if in (1) and (2) we require only that the inequalities hold on , where N is some neighborhood of .

在 (1)和(2)中，如果不等式只需要在上成立，其中 N是的某个邻域，我们就得到极大值和极小值的定义。

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。

In this process, the main problems to be solved are initial configuration problem and local minimum problem.

在这个过程中所面对的主要问题就是初始结构的生成问题和局部极小值问题。

If , is a local minimum value of .

当时，那么在处取得极小值。

In this paper, we propose a learning algorithm of the Hopfield neural network which can escape from local minimum.

在本论文中，我们提出了两种基于离散Hopfield神经元网络的跳出局部极小点的启发式算法。

If it is merely less than at any nearby point, it is a relative, or local, minimum.

如果仅仅小于附近任一点的值，那它就是相对的，或者说是局部的极小值。

But it has the shortcomings of longer calculation and easily getting into local minimum.

但它的计算时间长，易陷入局部极小一直是它不易克服的缺点。

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。