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Semi-supervised learning

说明：  一个用于产生海宁窗的Matlab函数，系统函数库也有(Haining window used to generate a Matlab function, the system function library is also)

本程序的功能是：实现信号从时域到频域的快速傅里叶变换。(Realize the signal conversion from time domain to frequency domain.)

此源文件包含了MATLAB两种自相关函数，并将其用于数字信号的处理，比较两种函数的不同(This source file contains two autocorrelation functions of MATLAB and is used for digital signal processing, comparing the two functions.)

本程序简单地实现了LZ78编码的功能，包括从文件输入以及输出(This program implements the LZ78 encoding simple features, including file input and output from)

说明：  针对污水处理系统的多变量、非线性、时变性与随机性等特点，介绍了专家系统的结构和特点及其在污水处理领域的应用研究现状，分析了其存在的问题。结果表明，国外专家系统发展迅速，并且应用领域遍及污水处理系统的各个方面，国内尚处于起步阶段。最后提出了在污水处理领域专家系统应用研究的发展方向。(Sewage treatment system for multi-variable, nonlinear, time variability and random other peculiarity of the structure and characteristics of expert systems and its application of sewage processing status, and analyzes its problems. The results show that the rapid development of foreign expert systems, and applications across all aspects of sewage treatment system, domestic still in its infancy. Finally, an expert in the field of wastewater treatment system application development direction.)

以某些特殊函数为基将数据过程或数据系列变换为级数系列以发现它的类似频谱的特征，从而实现数据处理。(In some particular function or process the data base is converted into data series series series to discover its characteristics similar to the spectrum, to achieve data processing.)

利用matlab设计滤波器，有原理说明及其matlab的代码实现(A filter was designed using matlab, there are principles of note and its matlab code to achieve the)

分析一个文件夹及其子文件夹下所有的html文档，并查找文档中加载的png图片文件，通过urlwrite函数下载并保存png类型的图片文件到硬盘上。 此matlab代码用到了网络连接，下载，并且通过多线程技术，增加了下载的速度。 可以通过这个方法，下载网页中的内容，可以说想怎么下，就怎么下。(Analysis all the files of type html in a folder, find the documents that load png image file.Then download and save the png file to harddisk through urlwrite function .)

小波分析的盲信号处理方法，有完成的程序，波形，及输出结果，适合初学者。(Wavelet analysis of blind signal processing method, and a complete program, waveform, and output, suitable for beginners.)