boost_PI_ME

matlab实现的prim算法和kruskal算法(prim and kruskal made by matlab )

MATLAB绘图函数 三维绘图 瑞利衰落 描述 可能简单了点 。(Three-dimensional drawing of the MATLAB graphics functions, Rayleigh fading description may be simpler.)

Dijkstra算法（单源最短路径）matlab代码(Dijkstra matlab code)

这是基于CSR算法在非局部环境的扩充表示，并应用在去噪上(This algorithm is based on CSR in the expansion of non-representation of the local environment, and apply the de-noising)

matlab读取bin或其他文件，修改其中数据，把数据生成到txt文档(matlab read bin or other document, modify the data, the data generated into txt file)

涉及粒子速度计算、圆心和半径拟合、去穷区间的积分、简单滤波器的设计、BP神经网络训练(Involves particle velocity calculation, center and radius of fitting, to poor interval integral, simple filter design, the BP neural network training)

The book gives the instruction of using Multisim 9 for educators

说明：  寻找三次样条多项式需要求解大量的线性方程。实际上，给定N个断点，就要寻找N-1个三次多项式，每个多项式有4个未知系数。这样，所求解的方程组包含有4*(N-1)个未知数。把每个三次多项式列成特殊形式，并且运用各种约束，通过求解N个具有N个未知系数的方程组，就能确定三次多项式。 (find cubic spline solving polynomial need a lot of linear equations. In fact, given N breakpoints, it is necessary to look for N-1 cubic polynomial, each with four polynomial coefficients unknown. Thus, by solving the equations contain 4* (N-1) unknown. Each cubic polynomial Timing special form, and use of various constraints, by solving N with N unknown coefficient equations, we can identify three polynomial.)

kpca原始程序和小波去噪部分，用于数据降维和特征提取比较实用(kpca part of the original program and wavelet denoising for data dimensionality reduction and feature extraction more practical)

This matlab code is intended to demonstrate the physical significance/interpretation of the elements of diagonal matrix in Singular Value Decomposition (SVD). Here, multiple rows of a BIG matrix is gradually being filled with ones which means the information content is being reduced. Now, the eigenvalues and their 1st and 2nd derivatives are plotted.