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[Other] 用龙贝格法计算函数f

Description: 介绍和使用龙贝格法进行数值分析的程序代码，Matlab-introduction and use Romberg method of numerical analysis code, Matlab
Platform: | Size: 2834 | Author: tsibintsibin | Hits:

[Speech/Voice recognition/combine] FormantTracker(matlab)

Description: 检测语音信号的共振峰 ％ gender = gender_detector(X,Fs) ％ ％ This function will use a pitch detection algorithm to decide if the speaker is MALE(0) or FEMALE (1). ％ It is designed to work with short speech samples (up to or greater than 50 ms). The function returns a ％ 0 if X contains male speech and a 1 if it contains female speech. -the resonance peak gender_detector% gender = (X, Fs)%% This function will use a detection a pitch lgorithm to decide if the speaker is abbreviation (0) or F EMALE (1). % It is designed to work with short spe ech samples (up to or greater than 50 ms). The fun ction returns a 0% if X contains a male speech and if it contains a female speech.
Platform: | Size: 16251 | Author: lixiao | Hits:

[Other resource] matlab(GA)2

Description: matlab遗传算法工具箱函数及实例讲解2 【问题】在－5<=Xi<=5,i=1,2区间内，求解 f(x1,x2)=-20*exp(-0.2*sqrt(0.5*(x1.^2+x2.^2)))-exp(0.5*(cos(2*pi*x1)+cos(2*pi*x2)))+22.71282的最小值。
Platform: | Size: 1188 | Author: xjk | Hits:

[Other resource] PID(F)

Description: 先进PID控制及其matlab仿真，源代码，是学习matlab的个人爱好者很好的学习资料
Platform: | Size: 85936 | Author: 李莉美 | Hits:

[Other resource] FDTD.f

Description: 三维光子晶体的带系和结构模拟程序，用matlab编写，很好用的。
Platform: | Size: 5494 | Author: 李华 | Hits:

[Other resource] f

Description: 偏最小二乘法中的交叉有效性计算的matlab程序，怎么计算出来的预测误差平方和PRESS不太对，偏大；
Platform: | Size: 976 | Author: 胡搜 | Hits:

[Other resource] F=0

Description: 二元傅立叶全息图在matlab上的实现。体现了其五个实现步骤。结果为生成啁啾光纤光栅。
Platform: | Size: 7906 | Author: 彭薇 | Hits:

[matlab] Matlab 牛顿插值法

Description:

x=a:(b-a)/n:b; %插值节点
y=f(x);
plot(x,y,'b') %用蓝色线作被插函数图象
hold on
z=a:(b-a)/(2*n):b;
n=length(x);
for j=2:n
for i=n:-1:j
y(i)=(y(i)-y(i-1))/(x(i)-x(i-j+1));%计算差商
end
end
u=y(n);
m=length(z);
for j=1:m
for i=n-1:-1:1
u=y(i)+u*(z(j)-x(i)); %计算牛顿插值多项式的值
v(j)=u;
end
u=y(n);
end
plot(z,v,'r') %用红色线作牛顿插值多项式图象
hold off


Platform: | Size: 378 | Author: xie3256035 | Hits:

[SourceCode] kirchhoff migration

Description: 本源码是关于kirchhoff migration 雷达成像 理论编写的 还有其改进K-F算法的matlab程序
Platform: | Size: 50849 | Author: zsadhh | Hits:

[Mathimatics-Numerical algorithms] 一维椭圆方程的广义差分法的matlab程序

Description: 取p=1,f=1,一维椭圆方程的广义差分程序
Platform: | Size: 296 | Author: huohaojin@yahoo.cn | Hits:

[AI-NN-PR] hopfild1

Description: Hopfield 网——擅长于联想记忆与解迷路 实现H网联想记忆的关键，是使被记忆的模式样本对应网络能量函数的极小值。 设有M个N维记忆模式，通过对网络N个神经元之间连接权 wij 和N个输出阈值θj的设计，使得: 这M个记忆模式所对应的网络状态正好是网络能量函数的M个极小值。 比较困难，目前还没有一个适应任意形式的记忆模式的有效、通用的设计方法。 H网的算法 1）学习模式——决定权重 想要记忆的模式，用-1和1的2值表示 模式：-1，-1，1，-1，1，1，... 一般表示： 则任意两个神经元j、i间的权重： wij=∑ap(i)ap(j)，p=1…p； P：模式的总数 ap(s)：第p个模式的第s个要素（-1或1） wij：第j个神经元与第i个神经元间的权重 i = j时，wij=0，即各神经元的输出不直接返回自身。 2)想起模式： 神经元输出值的初始化 想起时，一般是未知的输入。设xi(0)为未知模式的第i个要素（-1或1） 将xi(0)作为相对应的神经元的初始值，其中，0意味t=0。 反复部分：对各神经元，计算： xi (t+1) = f (∑wijxj（t）-θi), j=1…n, j≠i n—神经元总数 f（）--Sgn（） θi—神经元i发火阈值 反复进行，直到各个神经元的输出不再变化。-Hopfield network-- good at associative memory solution with the realization of lost H associative memory networks, are key to bringing the memory model samples corresponding network energy function of the minimum. With M-N-dimensional memory model, the network N neurons connect between right wij and N output threshold j design makes : M-mode memory corresponding to the network is a state network energy function is the M-000 minimum. More difficult, it is not an arbitrary form of adaptation memory model of effective, common design methods. H network algorithm 1) mode of learning-- decision weights want memory model, with 1 and 2 of the value of a model, said :-1, 1, 1, 1 ,1,1, ... in general : two were arbitrary neuron j i weights between : wij ap = (i) ap (j), p = 1 ... p; P : The tot
Platform: | Size: 11264 | Author: 韵子 | Hits:

[Communication-Mobile] 几种编码方式

Description: A. 产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；B. 对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50%，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列）；C. 改用HDB3码，画出前20个符号对应的波形；D. 改用密勒码，画出前20个符号对应的波形；E. 分别对上述1000个符号的波形进行功率谱估计，画出功率谱；F. 改变信源“0”的概率，观察AMI码的功率谱变化情况；-have a length of 1,000 random binary sequence, "0" with a probability of 0.8, "a" with a probability of 0.2; B. above zero AMI data coding, and pulse width of symbols width of 50%, waveform sampling rate Symbol rate for the eight times that he painted before the 20 symbols corresponding waveforms (also given before 20 Source sequence); C. HDB3 code switch to depict the former 20 symbols corresponding waveform; D. Miller to switch codes to depict the former 20 symbols corresponding waveform; E. respectively above 1,000 symbols for the power spectrum waveform estimated to depict the power spectrum; F. Change source "0" the probability to observe AMI code changes in the power spectrum;
Platform: | Size: 59392 | Author: 郭慧勤 | Hits:

[Other] 分岔图matlab

Description: 已知y=f（x）上一点（x1，y1），则在y=x直线上的点就为（y1，y1）。对应f（x）上点坐标即为（y1，f（y1）……依次类推，可以迭代出蛛网图形用来判断不动点是否稳定。模型为：x(t+1)=c*x(t)^2*(2-x(t)),其中c=25/16。(A point (x1, Y1) on the y=f (x) is known, and the point on the y=x line is (Y1, Y1). The point coordinates corresponding to f (x) are (Y1, f (Y1))...... By analogy, the cobweb graph can be iterated to judge whether the fixed point is stable or not. The model is: X (t+1) =c*x (T) ^2* (2-x (T)), where c=25/16.)
Platform: | Size: 1024 | Author: forevermorning | Hits:

[matlab] matlab

Description: MATLAB书的课件ppt，有两套。。。。。。(pptd'j'j'f'j'f'd'j'f'd'j'f'd)
Platform: | Size: 20699136 | Author: llk | Hits:

[matlab] matlab

Description: 事件的频率 在一组不变的条件下，重复作n次试验，记m是n次试验中事件A发生的次数。 频率 为 f=m/n(Frequency of events Under a set of constant conditions, the N trial was repeated, and the number of events A occurred in the n test was recorded by M. Frequency is f=m/n)
Platform: | Size: 9216 | Author: 左手你我 | Hits:

[matlab] fisher算法matlab源程序

Description: fisher算法matlab源程序,Fisher系数F，又称距离可分性测度，用来评价类间分离程度的函数(Fisher algorithm matlab source program, Fisher coefficient F, also called distance separability measure, is used to evaluate the degree of separation between classes.)
Platform: | Size: 1024 | Author: chenshig | Hits:

[matlab] MATLAB解矩阵微分方程

Description: 本文先简要介绍了矩阵的积分和微分的定义；接着通过弹簧-质量块儿-阻尼器系统的例子，阐述了求解常微分方程数值解的常用方法；最后，在前两部分的基础上，总结了用MATLAB求解形如_X(t) = f(X(t); t) 矩阵微分方程数值解的方法。(In this paper, the definition of integral and differential of matrix is briefly introduced. Then the common method of solving numerical solution of ordinary differential equation is described by the example of spring mass block damper system. Finally, on the basis of the first two parts, the solution of the form of _X is summed up by MATLAB. (T) = f (X (T); t) numerical solution of matrix differential equations.)
Platform: | Size: 300032 | Author: 李磊哥 | Hits:

[Graph program] 图像清晰度评价指标Matlab

Description: 图像清晰度评价函数说明 1、熵: 表示图像所包含的平均信息量的多少,嫡值越大则所含信息量越多。 文件名：entropy.m 结果：EN 2、交叉嫡：反映两幅图像的差异,交叉嫡越小,则融合图像和原图像的差别越小。 文件名：cross_entropy.m 结果：平均交叉嫡MCE，均方根交叉嫡RCE 3、峰值信噪比: PSNR越高,说明融合效果与质量越好。 文件名：psnr.m 结果：PSNR 4、Qabf: 评价边缘或梯度质量，越大边缘越明显 文件名：Qabf.m 结果：Qabf（QAB/F) 5、平均梯度（Average Gradient）:也称为清晰度，反映了图像中的微小细节反差与纹理变化特征，同时也反映了图像的清晰度，越大越好。 文件名：avg_gradient 调用：outval = avg_gradient(img) 6、结构相似性指数： SSIM指原图像和融合图像的相似程度,值越大越相似 文件名：ssim.m 结果：SSIM 7、互信息：MI(mutual information) 8、NMI: Normalized mutual information(Image sharpness evaluation function)
Platform: | Size: 312320 | Author: 随风之鱼 | Hits:

[matlab] Matlab信道模型

Description: watterson信道matlab仿真,瑞利衰落。。。。(This example shows how to simulate High-Frequency (HF) ionospheric channels, based on the models described in Recommendation ITU-R F.1487. In particular, it shows how to simulate the general Watterson channel model, and other simplified channel models used in the quantitative testing of HF modems. It makes use of the Rayleigh multipath fading channel object and the Gaussian and bi-Gaussian Doppler structures from Communications System Toolbox.)
Platform: | Size: 162816 | Author: 马欢 | Hits:

[Other] F-W算法讲解及matlab实现

Description: F-w算法讲解及matlab代码，里面有课件以及代码(F-w algorithm explanation and matlab code)
Platform: | Size: 664576 | Author: 小孙孙123 | Hits:
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