pb6

基于相位的光流估计，Trans NN 2002的文章(Gautama, T. and Van Hulle, M.M. (2002). A Phase-based Approach to the Estimation of the Optical Flow Field Using Spatial Filtering, IEEE Trans. Neural Networks, 13(5), 1127--1136)

说明：  对一个单位负反馈系统， 当k=1.5时，绘制其bode图和nyquist图；(For a unit negative-feedback system, when k = 1.5, rendering the Nyquist diagrams and Bode figure )

matlab cplex 工具箱，包含cplex优化的全部功能(matlab cplex toolbox)

波束形成算法 用MATLAB实现的代码 两个代码源：shizhizhen.m和xianliezhen.m(Beamforming Algorithm)

RFS filter bank, by zisserman and group

matlab下可以直接使用的小程序 包括这种常用算法 对应书籍为《matlab宝典》(matlab can be directly used for small programs, including such popular books as the corresponding algorithm " matlab Collection" )

this is a very interesting paper, ple read it PerformanceofAlamoutiSchemewith TransmitAntennaSelectionfor M-raySignals

非参数的功率谱估计包括四个，周期图法，Blackman-Turkey,Welch-Bartell,改进的周期图法，输入信号为白噪声通过切比雪夫滤波后的信号(Non-parametric estimation of the power spectrum consists of four, periodogram, Blackman-Turkey, Welch-Bartell, improved cycle diagram method, the input signal is white noise ratio of the signal by cutting Schiff filtered)

BP神经网络容易陷于局部极小值，PSO算法在无约束非线性函数优化方面性能优越，通常可以直接找寻到全局最优解，即使不能搜多到全局最优解，也距离全局最优点不远。当然，基本PSO算法陷入局部极值也是有的。对于这个缺点目前还没有找到比较有效、省市的解决方案。本案例实现利用PSO算法和BP算法共同训练神经网络，先将网络进行PSO算法训练，然后BP算法接着进行小范围精细搜索，PSO算法训练神经网络的本质就是将输出误差函数（即能量函数）看成目标函数，PSO对能量函数进行全局寻找最小值。(BP neural networks are prone to local minimum values. The PS algorithm has superior performance in the optimization of unconstrained nonlinear functions. It can usually find the global optimal solution directly. Even if it can not find more global optimal solutions, it is not far from the global best. Of course, there is also a local extreme of the basic PO algorithm. For this shortcoming, there is no more effective, provincial and municipal solution. This case realizes the use of the SO algorithm and the BP algorithm to train the neural network. First, the network is trained in the SO algorithm, and then the BP algorithm is followed by a small range of fine searches. The essence of the PO algorithm training neural network is to regard the output error function(ie, the energy function) as the objective function, and the PO seeks a global minimum value for the energy function.)

本程序是牛顿拉夫逊法求解电力系统潮流计算，包括节点导纳矩阵的计算等(This program is the Newton Raphson method for solving power flow calculation, including the calculation of the node admittance matrix, etc.)