查询词典 local minimum

BP neural networks have been widely used in mode recognizing, image processing, system control etc A lot of study has been done on the training algorithm of BP neural networks But there are still many short comings To complete the training of the weights of a BP neural network, the key problem is how to overcome the staying at the local minimum points as well as how to increase the training speed based on this condition This paper comes up w...

BP神经网络被广泛应用于分类模式识别、图像处理和系统控制等领域人们对BP网络算法进行了许多的研究，但尚有其不足之处为完成其权的训练，问题的关键在于如何避免陷入局部极小及在此前题下如何提高学习速度为此，就如何选取学习率η和动量矩α提出了改进方案，并应用于数字识别，得到了较为满意的结果

Fuzzy h-prototypes algorithm is one of the most effective algorithms of cluster analysis,however,the problem of sensitive to initial value and vulnerable to the problem of local minimum exists.

模糊h-prototypes算法是当前聚类分析中最有效算法之一，但是存在对初始值敏感、容易陷入局部极小值的问题。

These distributions show that the electrons lie mainly in the scattering plane which are observered to be preferentially emitted in the forward direction, lying between 0 and projectile velocity Vp. The distributions also display the typical two-fingered structure with a local minimum on internuclear axis.

结果表明：电子主要集中在散射平面内；在散射平面内，电子速度分布介于0和入射炮弹速度Vp之间且在炮弹和靶核核间轴处有一极小值，呈现出典型的双峰结构。

An algorithm based on the square-root unscented Kalman filter is proposed for weight estimation of the neural network, which can overcome the BP algorithm's drawbacks of slow learning speed, high computational complexity and the likeliness to make the study fall into the local minimum points.

提出一种利用平方根无轨迹卡尔曼滤波进行神经网络权值估计的算法，该算法可以克服BP算法存在的学习速率缓慢、计算量大、容易使学习陷入局部极小等缺点以Mackey-Crass混沌时间序列作为神经网络输入，运用SR-UKF算法、UKF算法、BP算法仿真神经网络。

Local minimum and slow convergence are the main shortcomings in nonlinear impedance inversion problems.

求解的局部性和计算速度慢是目前非线性波阻抗反演存在的主要缺陷。

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。

The problem is that the local minimum wage is very low.

但问题在于当地的最低工资标准本身非常低。

What is the local minimum wage in an hour?

当地的每小时最低工资是多少？

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。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。