"Matlab常用均值生成函数预测算法及程序详解"

版权申诉

140 浏览量更新于2024-02-18 收藏 154KB DOCX 举报

The given summary contains information about common algorithms used in MATLAB, including the time series prediction algorithm. It involves three main programs: predict_fun.m, timeseries.m, and seriesexpan.m. The predict_fun.m is the main program that utilizes the timeseries.m and seriesexpan.m as subprograms. The predict_fun.m program takes input data "b" (a vector) and the number of prediction data "step", and outputs the prediction data "ima_pre" (also a vector). The predict_fun.m program starts by standardizing the input data "b" by subtracting the mean and dividing by the standard deviation. Then, it invokes the timeseries.m program to process the standardized data and generate a resultant sequence "f" along with another sequence "x". Next, the program calls the seriesexpan.m program to further process the original data "b" and obtain "old_f2" - an expanded series of data based on the original input. Finally, the program fills in negative values in the sequence "f" with a threshold of 0.0001. Overall, the predict_fun.m algorithm is designed to take a set of training data, process it using the timeseries.m and seriesexpan.m subprograms, and generate a prediction sequence. The algorithm is useful for time series forecasting and can be applied to various fields such as finance, economics, and weather forecasting.

k=inf;

for i=1:row

if (length(find(s_path==i))==0)&(k>distance(i))

k=distance(i);

temp_2=i;

end

s_path=[s_path,temp_2];

temp=temp_2;

end

%output the result

path(1)=endpoint;

i=1;

while path(i)~=start

path(i+1)=flag(path(i));

i=i+1;

end

path(i)=start;

path=path(end:-1:1);

short_distance=distance(endpoint);

三绘制差分方程的映射分叉图

function fork1(a);

% 绘制 x_(n+1)=1-a*x^2_n 映射的分叉图

% Example:

% fork1([0,2]);

N=300; % 取样点数

A=linspace(a(1),a(2),N);

starx=0.9;

Z=[];

h=waitbar(0,'please wait');m=1;

for ap=A;

x=starx;

for k=1:50;

x=1-ap*x^2;

end

for k=1:201;

x=1-ap*x^2;

Z=[Z,ap-x*i];

end

waitbar(m/N,h,['completed ',num2str(round(100*m/N)),'%'],h);

m=m+1;

剩余15页未读，继续阅读

苦茶子12138

粉丝: 1w+

"Matlab常用均值生成函数预测算法及程序详解"

matlab常用算法 .doc

MATLAB一些常用的算法

matlab的一些常用算法 (2).docx

【老生谈算法】matlab的一些常用算法.docx

matlab-Kmeans算法.docx

Matlab分水岭分割算法.docx

用Matlab实现遗传算法.docx

【老生谈算法】matlab实现isodata算法.docx

【老生谈算法】运用Matlab实现DES算法.docx

Matlab实现区域生长算法.docx.docx

最新资源