APcluster

自编的粒子群算法，容易看懂，适合粒子群算法初学者(Particle Swarm Optimization own, easy to understand for beginners PSO)

MATLAB实用教程PPT,适合matlab入门。PPT共有11章，讲解很全面(Practical MATLAB tutorial PPT, suitable for matlab entry. PPT consists of 11 chapters, on the very comprehensive)

nuttall窗三谱线插值电力谐波分析程序，可随意更换信号参数(Nuttall window Interpolated power harmonic analysis program can easily replace the signal parameters)

说明：  复合材料属性矩阵A，B,D,As的确定，通过这些矩阵可以计算材料刚度矩阵(form material matrix of composite material)

用matlab实现，求最短路径的弗洛伊德算法和Dijkstra算法，很有用(Floyd-Warshall algorithm Dijkstra s algorithm)

说明：  ：针对MP3 编码方式和帧结构进行分析，利用帧中的比例因子提出了一种压缩域水印算法。算法通过引入帧变化分析步 骤，很好地实现了水印的自适应嵌入。对于不同的系统要求，还可以通过修改门限信噪比的值SNRlim按需进行水印嵌入，使算法 具有更大灵活性。同时在牺牲一定的嵌入空间前提下，实现了水印信息的自同步。实验表明，对于不同风格的音乐，该水印算法 具有很好的不可听性。(In this paper，the encoding method and the frame structure of MP3 are expounded in detail，a watermark algorithm is proposed based on the scale factor in MP3 frame.By introducing the step of frame altering analysis，the algorithm can realize that watermarks is embedded adaptively.By modifying threshold SNRlim（the ratio of signal to noise），the algorithm can meet different requirements of some system，that is what enable the algorithm to have a bigger flexibility.Based on expense of some embedding positions，the watermark can be embedded with self-synchronization.The experiment results show this algorithm can get a good audio effect with various types of audio.)

用MATLAB实现动态聚类或迭代自组织数据分析算法（ISODATA）可实现对二维数据的聚类(Iterative Self-Organizing Data Analysis Technique(ISODATA) programed in MATLAB, for 2-D data clustering)

小程序，matlab编的，用于解常微分方程的问题(Small program, matlab compiled for the solution of ordinary differential equations of the problem)

MATLAB写的CRC校验编码和解码程序(CRC check code written in MATLAB and the decoder)

说明：  This is the first part of Noonegative Matrix Factorization