qumiandepinjie003

说明：  By using a MATLAB program, design a Delta Modulation (DM) system with one step-size and a modified DM system with two step-sizes.

Matlab code for dds output can be taken for sine wave generation using matlab

傅里叶分解，包含偶数次谐波，是一个matlab的M文件(Fourier decomposition, contain even-numbered harmonics.Is an M-file matlab)

％ [BestPop,Trace]=fmaxga(FUN,LB,UB,eranum,popsize,pcross,pmutation) ％ Finds a maximum of a function of several variables. ％ fmaxga solves problems of the form: ％ max F(X) subject to: LB <= X <= UB ％ BestPop--------最优的群体即为最优的染色体群 ％ Trace----------最佳染色体所对应的目标函数值 ％ FUN------------目标函数 ％ LB-------------自变量下限 ％ UB-------------自变量上限 ％ eranum---------种群的代数,取100--1000(默认1000) ％ popsize--------每一代种群的规模；此可取50--100(默认50) ％ pcross---------交叉的概率,此概率一般取0.5--0.85之间较好(默认0.8) ％ pmutation------变异的概率,该概率一般取0.05-0.2左右较好(默认0.1) ％ options--------1×2矩阵,options(1)=0二进制编码(默认0),option(1)~=0十进制编码,option(2)设定求解精度(默认1e-4)( [BestPop, Trace] = fmaxga (FUN, LB, UB, eranum, popsize, pcross, pmutation) Finds a maximum of a function of several variables. Fmaxga solves problems of the form: max F (X) subject to : LB <= X <= UB BestPop-------- optimal chromosome groups is the best group Trace---------- chromosome corresponding to the best objective function value FUN------------ objective function LB------------- variable lower limit since the UB------------- variable upper limit eranum--------- populations algebra, take 100- 1000 (default 1000) popsize-------- population size of each generation this desirable 50- 100 (default 50) pcross--------- crossover probability, the probability of a general check 0.5- 0.85 between the better (default 0.8) pmutation------ mutation probability, the probability of 0.05 general admission better about-0.2 (default 0.1) options-------- 1 × 2 matrix, options (1) = 0 binary code (default 0), option (1) ~ = 0 decimal coding, option (2 ) set accuracy (default 1e-4))

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

Simulation of an Elastic lidar system.

数值分析及其MATLAB实现（MATLAB 6.X 7.X版）光盘含有用可视化图形介绍的MATLAB基本操作和作图等内容的Word文档电子图书及其多媒体教学软件。另外，光盘中还附有本书中的MATLAB程序包和图形供读者使用。(EBooks numerical analysis and MATLAB (MATLAB 6.X 7.X version) CD-ROM containing MATLAB basic operations and mapping of the visual graphics on a Word document and multimedia teaching software. In addition, the CD also use with MATLAB package and graphics for this book readers.)

课本源码，非常好用的，大家下载吧，matlab的源程序。 (Textbooks source, very easy to use, download it)

数字信号调制样式自动识别可以识别数字信号的程序(Digital signal modulation Automatic Identification of the program can recognize the digital signal)

matlab关于isodata聚类算法的代码(Matlab on the ISODATA clustering algorithm code )