neural2

this is an good edge detection

This tutorial is designed to give the reader an understanding of Principal Components Analysis (PCA). PCA is a useful statistical technique that has found application in fields such as face recognition and image compression, and is a common technique for finding patterns in data of high dimension. Before getting to a description of PCA, this tutorial first introduces mathematical concepts that will be used in PCA. It covers standard deviation, covariance, eigenvectors and eigenvalues. This background knowledge is meant to make the PCA section very straightforward, but can be skipped if the concepts are already familiar.

experimetal code for meshfree exponential integrators

说明：  MATLAB源程序代码分享：MATLAB实现组对象的整体几何变换(Matlab Source Code Sharing: Matlab Group object to achieve the overall geometric transformation)

使用matlab编辑M文件，模拟菲涅尔衍射显现象，压缩包中包含了4个M文件(M file editing using matlab to simulate the phenomenon of Fresnel diffraction significant)

PLS-GUI。非常经典的PLS软件。完全图形化。(PLS-GUI， written for MATLAB)

利用matlab自带的BP神经网络工具箱对duffing混沌背景模型进行相空间重构与预测，程序中已经给出duffing函数，主函数中也给出了主要注释，方便大家学习交流。(BP' s own use matlab neural network toolbox for duffing chaotic background model and prediction of phase space reconstruction, the program has been given duffing function, the main function also gives the main note, we facilitate learning exchanges.)

最大熵模型简单实现 这是别人的 仅供借鉴 可以用 亲身试用(Maximum Entropy model is simple to achieve)

说明：  杂波的一个MATLAB仿真，杂波的产生：先生成一个（0，1）分布的随机数r，让后根据poission分布产生杂波的个数n，这n个杂波是服从均匀分布(Clutter a MATLAB simulation, the resulting clutter: a President (0,1) distribution of the random number r, let poission distributed according to the number of clutter have n, that n is subject to a uniformly distributed clutter)

产生2fsk或4fsk的调制信号，可以控制带宽，中心频率，噪声，可以观察频谱(this can product signal)