Machine learning

对Matlab中的文件进行了解释和说明，对Matlab初学者有一定帮助(Matlab files for an explanation and description of the Matlab help beginners have a certain)

1．编写一个程序，读取一句英语短语，并将其编制成莫尔斯码 莫尔斯码是世界上最著名的编码机制，是1832年由Samuel Morse创立的，用于电报系统使用。莫尔斯码编码规则如下：①字母、数字和一些特殊符号（如圆点、逗号、分号）用一系列指定的点和线表示；②单词之间用三个空格分开，没有点和线；③编码字母之间用一个空格。 (1 write a program to read a word, English phrases, and programmed into the Morse code Morse Ma is the encoding mechanism of the world s most famous, is in 1832 by the Samuel Morse foundation, used for telegraph system. Morse coding rules are as follows: ① letters, numbers and special symbols (such as dot, comma, semicolon) is represented by a series of specified points and lines the words are separated by three spaces, no point and line the code letters with a space. )

用实验方法测试RLC串联谐振电路的幅频特性曲线。当正弦交流信号的频率f改变时，电路的感抗、容抗随之而变.取电路电压U0作为响应，当输入电压Ui幅值维持不变时，在不同信号频率的激励下，测出U0之值，用LabVIEW程序完成频谱分析和滤波，变换等信号处理，即可测出RLC串联电路的谐振频率，(Amplitude-frequency characteristics experimentally tested RLC series resonant circuit curve. When changing the frequency f of the sinusoidal AC signal, the circuit inductance, capacitance change with Take circuit voltage U0 as a response when the amplitude of the input voltage Ui unchanged, signals at different excitation frequencies, the measured value U0, the process is complete spectrum analysis using LabVIEW and filtering, transform signal processing, can be measured RLC series circuit resonant frequency,)

a simple eigenface program under matlab Imagetest is the picture of the guy you want to find among the 20 guys

说明：  模拟退火算法的MATLAB实现，通过赋予搜索过程一种时变且最终趋于零的概率突跳性，从而可有效避免陷入局部极小并最终趋于全局最优的串行结构的优化算法。(MATLAB implementation of simulated annealing algorithm, a search process by giving time-varying and ultimately tends to zero the probability of jumps, which can effectively avoid local minima and ultimately global optimization algorithm has been optimized serial structure.)

MATLAB程序关于数字信号处理的算法实现(MATLAB program on digital signal processing algorithm)

用Remez算法设计一个低通滤波器；设计一个5路5:1多相减采样滤波器和一个4路1:4多相增采样滤波器。(Remez algorithm with a low-pass filter designed by a 5-way multi-phase sampling filter and 5:1 4 1:4 a multi-phase sampling filter increases.)

说明：  求解约束极小值问题的函数fmincon，fmincon是求解多维约束优化问题的优化工具箱函数(Problem solving constrained minimum function fmincon, fmincon is a multi-dimensional constrained optimization problems for solving the optimization toolbox function)

基于matlab的关于遗传算法的一些重要的函数的m文件，供读者参考 (Based on some of the important matlab m file on genetic algorithm function for readers reference)

PSO算法应用到图像三阈值分割，评价函数为二维最大熵(PSO algorithm is applied to image three threshold segmentation, the evaluation function for the two-dimensional maximum entropy)