2weishange111

使用MATLAB实现主成分分析，可以去除数据间的共线性及对大量数据进行降维处理。(Using the matlab to realize the principal component analysis to remove the liner of the date and reduce the dimension of the large amont of the date. )

基于MATLAB的电力系统潮流计算程序设计的5节点PQ法潮流计算(PQ method flow calculation based on MATLAB power flow calculation program designed 5-node)

Fast video loading code do background subtraction subtracting all frames from first frame and show the result video so fast

二维圆柱bem声学的程序,程序比较好读，能自己设置参数(Bem-dimensional cylindrical acoustic program, the program is relatively easy to read, can set their own parameters)

把辨识分成两步进行：第一步：利用相关分析法获得对象的非参数模型（脉冲响应或相关函数）；第二步：利用最小二乘法、辅助变量法或增广最小二乘法等，进一步求的对象的参数模型。如果模型噪声与输入无关，则Cor-ls相关最小二乘法（二步法）可以得到较好的辨识结果。Cor-ls相关最小二乘法（二步法）实质上是先对数据进行一次相关分析，滤除了有色噪声的影响，再利用最小二乘法必然就会改善辨识结果。能适应较宽广的噪声范围，计算量不大，初始值对辨识结果影响较小。但要求输入信号与噪声不相关(The identification is divided into two steps: the first step: using the correlation analysis method for object nonparametric model (impulse response or related function) The second step: using the least squares method, auxiliary variable method or augmented least squares method and so on, further for the parameters of the object model. If the model input noise and independent, the Cor- ls related least squares (two footwork) can get good recognition results. Cor- ls related least squares (two footwork) is essentially the data to a correlation analysis, filter in addition to the influence of colored noise, using least squares inevitable will improve the identification result. To adapt to a wide range of noise and calculation is not big, the initial value to identification results less effect. But for the input signal and noise are not related)

简化的ANN程序，程序代码很少，但是预测效果相当(a simplified Ann algorithm with good performance)

滑模变结构于matlab仿真的自带源码，pdf版本的书籍已经上传，有需要的可以下载(Sliding Mode Variable Structure comes with source code in matlab simulation pdf version of the book has been uploaded, you can download)

This a WLS meshfree code have been developed for curve fitting problems. this archive contains Matlab subroutines

此程序为matlab中量规法计算曲线分形维数的一段源代码(This procedure in the gauge method matlab fractal dimension curve section of the source code)

matlab编的模拟自由扩散的过程，初学者适用(simulation of free walk )