chap7

useful backpropagation

最优分类法，用于找出数据的变差举证，并确定分类数(Optimal classification of evidence used to identify the data variation and to determine the number of classification)

DFT transformation matrix, eigen values, orthogonality check, graphical representation, testing on a random signal

matlab下可以直接使用的小程序 包括各种常用算法 对应书籍为《matlab宝典》 此为总的部分(matlab can be directly used for small programs include a variety of commonly used algorithms corresponding books as " matlab book" This is part of the total)

软件代码保护编写方法-vmprotect(soft-code protect writing-vmprotect)

The module can optionally operate with a private cache that understands the Cache-Control: header and uses both the ETag and Last-Modified cache validators. Both file system and memcached based caches are supported. (Automatically adds back ETags into PUT requests to resources we have already cached. This implements Section 3.2 of Detecting the Lost Update Problem Using Unreserved Checkout)

How to do hanning window

简易k-means聚类算法实例，针对二维数据，自带简易数据矩阵，分析结果有输出图像。(Simple k-means clustering algorithm example, for two-dimensional data, comes with simple data matrix, analysis results output image.)

16QAM通过带限信道，设码元速率为1000波特，传输的滚降系数是0.75的滚降升余弦滤波器(16QAM by band-limited channel, set the symbol rate is 1000 baud, roll-off factor of transmission is 0.75 rolloff raised cosine filter)

square wave by sine wave