sound04

This source code is a matlab code for calculating the difference in image qualities. PSNR and MSE are very helpful for noises and compressions

inverted wedge controlling parameters using pid controller.

simple IDMA TYPE RANDOM INTERLEAVER

利用matlab生成标准的瑞利分布,方差为1，(generate the rayleigh distribution)

Using TF-IDF to Determine Word Relevance in Document Queries : In this paper, we examine the results of applying Term Frequency Inverse Document Frequency (TF-IDF) to determine what words in a corpus of documents might be more favorable to use in a query. As the term implies, TF-IDF calculates values for each word in a document through an inverse proportion of the frequency of the word in a particular document to the percentage of documents the word appears in. Words with high TF-IDF numbers imply a strong relationship with the document they appear in, suggesting that if that word were to appear in a query, the document could be of interest to the user. We provide evidence that this simple algorithm efficiently categorizes relevant words that can enhance query retri

可以进行直方图计算，也可以进行灰度运算，可以实现图像的变换操作(Histogram can be calculated, it can be gray-scale operation, the image transformation operation can be achieved)

matlab pid matlab pid matlab pid (matlab pidmatlab pid matlab pid)

pso coding in matlab

基于PCA的人脸特征抽取，首先将200幅人脸图像转换成向量形式，进而进行组成样本矩阵。(The PCA-based facial feature extraction, first 200 face images into a vector format, then the composition of the sample matrix.)

Controlling DC Motor with matlab simulink, the equetions are available.