rk4sys

MATLAB及在电子信息中的应用：q707有限长序列z变换，z逆变换。708是逆变换(MATLAB and the application of electronic information: q707 finite length sequence of z transform, z inverse transformation. 708 is the inverse transform)

about fourier transform, get audio signal from mic and analyze it

用matlab进行图像处理的相关函数，可进行图像的处理，不用自己写函数了(Image processing using matlab function, image processing, do not write your own functions)

说明：  该书介绍了两大智能算法(遗传算法和粒子群算法)的具体应用和实例分析。(This book introduces the specific application and case analysis of two intelligent algorithms (genetic algorithm and particle swarm optimization algorithm).)

说明：  以MIT—BIH数据库的数据作为对象，对心电数据进行QRS波群的提取(To MIT-BIH database data as objects, on the QRS wave of ECG data, the extraction group)

splu Square PA=LU factorization *with row exchanges*.

说明：  使用个股日内髙频收益率计算己实现值进行分析,同时计算得到二阶矩 和高阶矩值并进行对比。本文根据己实现量的大小将所有样本股分为己实现值由 小到大的姐别,分别跟踪各股票组合的收益,探索预期收益与个股己实现值之间 的变化关系,然后将分组的结果应用于多空策略,为提高资产配置收益提供参考。 同时,将各己实现变量和各类对预期收益产生影响的控制变量放在一起构建 Fama-MacBeth截面回归,分析高频已实现量是否具有定价能力。(The realized value is calculated by using the daily gust rate of return of individual stocks, and the second-order moments are obtained by calculating at the same time. Comparisons are made with higher order moment values. This paper divides all sample stocks into realized values according to the size of realized stocks. Sisters from small to large track the earnings of each stock portfolio, and explore the relationship between expected earnings and the realized value of each stock. Then the grouping results are applied to the multi-empty strategy to provide reference for improving asset allocation returns.)

matlab，把文件解压后放入matlab的默认文件夹里，一般是（C:MATLAB7work）。在matlab主窗口中输入命令ima=imread( C:MATLAB7work1.jpg )，然后输入命令[P,U,iter]=GPAS2(ima,2)，即可。绝对好运行(matlab, matlab to unzip the files into the default folder, usually (C: MATLAB7 work). In the matlab main window, type the command ima = imread (' C: MATLAB7 work 1.jpg' ), and then enter the command [P, U, iter] = GPAS2 (ima, 2), can. Definitely a good run)

粒子滤波源代码，适合各种非线性参数估计，和智能算法(Particle filter source code for various nonlinear parameter estimation, and intelligent algorithm)

说明：  观察高斯序列 的时域和幅频特性。 ①固定p=8，q分别等于2、4、8，观察它们的时域和幅频特性，了解当q取不同值时，对信号序列的时域和幅频特性的影响 ②固定q=8，p分别等于8、13、14，观察p变化对信号序列时域和幅频特性的影响，注意p等于多少时，会发生明显的泄露现象，混叠是否也随之出现？记录实验中观察到得现象，绘出相应的时域序列和幅频特性曲线(Observed Gaussian sequence in time domain and amplitude-frequency characteristics. ① fixed p = 8, q is equal to 2,4,8 respectively, to observe them in time domain and amplitude-frequency characteristics, to understand when the different values of q, the signal sequence in time domain and amplitude-frequency characteristics of ② fixed q = 8 , p is equal to 8,13,14 respectively, to observe the changes in the signal sequence p in time domain and amplitude-frequency characteristics, note that p is equal to the number when the apparent leakage phenomenon, aliasing is also gone? Records of the experiment was observed phenomenon, draw the corresponding time-domain sequence and amplitude-frequency characteristic curves)