BP_nn

说明：  利用matlab实现移位 卷积 相加 等等(Using matlab convolution sum, and so achieve the shift)

旅行商问题，即TSP问题（Travelling Salesman Problem）又译为旅行推销员问题、货郎担问题，是数学领域中著名问题之一。假设有一个旅行商人要拜访n个城市，他必须选择所要走的路径，路径的限制是每个城市只能拜访一次，而且最后要回到原来出发的城市。路径的选择目标是要求得的路径路程为所有路径之中的最小值。(Traveling Salesman Problem, or TSP problem (Travelling Salesman Problem) also translated as the traveling salesman problem, traveling salesman problem is one of the well-known problems in the field of mathematics. Suppose you have a travel business to visit n cities, he must choose which path to go, limiting the path is to visit each city only once, and the last to return to the original departure city. Select the destination path is the requirement for the minimum distance path was among all paths.)

VOICE UNVOICED SILENCE PITCH MARKING

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A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.Polyalphabetic substitution ciphers are useful because the are less easily broken by frequency analysis, however if an attacker knows for instance that the message has a period n, then he simply can individually frequency analyze each cipher alphabet. The number of letters encrypted before a polyalphabetic substitution cipher returns to its first cipher alphabet is called its period. The larger the period, the stronger the cipher. Of course, this method of encryption is certainly not secure by any definition and should not be applied to any real-life scenarios.

atport - Matlab接口模块 Matport是NTPort Library的MatLab接口模块。借助Matport，你可以在Matlab中直接访问PC的I/O端口。(atport- Matlab interface module Matport is NTPort Library of MatLab interface module. With Matport, you can directly access the PC in Matlab of the I/O port.)

Plot Erlanb this is ma file its great cuz t is a single prorgram u dont hsve to carry multiple files

利用matlab实现数字水印源码。提供了各种攻击的实现。(using Matlab digital watermarking source. Provide a variety of attacks realized.)

基于LabView2011的自相关分析和互相关分析，测试两个信号的互相关函数和自相关函数。(Based on the autocorrelation and cross-correlation analysis LabView2011 analysis, test cross-correlation function of two signals and autocorrelation function.)

结合PCA的尺度不变特征变换(SIFT)算法，基于kaiser窗的双谱线插值FFT谐波分析，可实现对二维数据的聚类。( Combined with PCA scale invariant feature transform (SIFT) algorithm, Dual-line interpolation FFT harmonic analysis kaiser windows, Can realize the two-dimensional data clustering.)