chap4_3

包括TVD去噪（速度非常快），最小平方最优程序，用于稀疏频率分解，很好用。(Including TVD noising (very fast), the least-squares best program for sparse frequency resolution, very good use.)

利用matlab的gui设计的带有输入和输出功能的界面图形，实现等距线可视性很强，自己独立编写的数据和图形，学习非常值得,实现pca bp和svm压缩图像，matlab语言(Using GUI of MATLAB to design interface graphics with input and output functions, realizing the visibility of isometric line is very strong, and it is very worthwhile to study the data and graphics written independently, realizing PCA BP and SVM compressed images, MATLAB language)

EM算法，在统计计算中，最大期望（EM）算法是在概率（probabilistic）模型中寻找参数最大似然估计或者最大后验估计的算法，其中概率模型依赖于无法观测的隐藏变量（Latent Variable）。(EM algorithm)

This is a code for admittance matrix formulation. Given that its inputs are bus, to bus, impedance, susceptance and tap transformer.

节点导纳矩阵 电力系统仿真会用到 自己变得 大家学习(Node admittance matrix of power system simulation will use their get them to learn)

信号的时移 y(t) = x(t - t0) 其中，t0为位移量。若t0为正数，则y(t)等于将x(t)右移t0秒之后的结果(This program is used to implement the time-shift operation )

nsga2源码下载。。。。。。。。。。。。。。。。。。。。。(nsga2 code)

说明：  gui for matlab palm print recognition

采用离散邻域和模糊邻域两种方法对粗糙集数据进行属性约简，还包含求信息熵程序(Discrete neighborhood and fuzzy neighborhood methods are used to reduce attributes of rough set data, and an information entropy program is included.)

说明：  基于PSO（粒子群算法）的列车速度优化，matlab实现。(Train speed optimization based on PSO (particle swarm optimization) is realized by matlab.)