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fish
Fisher线性判别是线性分类算法中最基本的一种算法,其基本思想是将d维空间中的样本投影到一条最易于分类的投影线上,再进行分类。本文将用使用matlab实现Fisher线性判别算法,并给出4种阈值选择的方法。(Fisher Linear Discriminant is a linear classification algorithm as a basic algorithm, its basic idea is to d-dimensional space of the samples are projected onto one of the most easily classified projector online, and then classified. This article will use matlab to achieve Fisher Linear Discriminant algorithm, and gives four kinds of threshold selection method.)
- 2007-11-23 08:33:12下载
- 积分:1
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g729matlab
g729语音编码,MATLAB运行实现,符号国际标准(g729 speech coding, MATLAB runs to achieve, symbol of international standards)
- 2020-12-18 10:19:12下载
- 积分:1
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rand
混沌随机数的应用文章,适合用于图像加密算法中。(Application of the chaotic random number, suitable for image encryption algorithm)
- 2013-02-08 11:50:23下载
- 积分:1
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eEMD
该算法用于对信号进行频谱分析,以及噪声处理(The algorithm is used for spectrum analysis of the signal, and noise processing)
- 2012-11-10 17:41:45下载
- 积分:1
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Cluster
使用分解聚类算法在IRIS数据上进行聚类分析,IRIS数据是由鸢尾属植物的三种单独的花的测量结果所组成,模式类别数为3,特征维数是4,每类各有50个模式样本,总共有150个样本。(The use of decomposition in the IRIS data clustering algorithm on the cluster analysis, IRIS data are from the iris flower three separate components of the measurement results, models for category 3, 4 are characteristic dimension, of each type of each 50 model samples, a total of 150 samples.)
- 2009-03-07 20:09:21下载
- 积分:1
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regular
LDPC仿真的一些列子,自己编写的,可能有一定错误,需要修改(Some Lie LDPC simulation, their preparation, may have some errors, you need to modify)
- 2021-04-09 15:08:59下载
- 积分:1
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matlabtool
matlab的工具箱集合,希望对初学者有帮助(Matlab toolbox set, and I hope to help beginners)
- 2007-07-08 12:20:51下载
- 积分:1
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MATLAB
一、 牛顿-拉夫逊法概要
首先对一般的牛顿-拉夫逊法作一简单说明。已知一个变量X的函数
(4-6)
解此方程式时,由适当的近似值X(0)出发,根据 (4-7)
反复进行计算,当X(n)满足适当的收敛判定条件时就是(4-6)式的根。这样的方法就是所谓的牛顿-拉夫逊法。
式(4-7)就是取第n次近似解X(n)在曲线 上的点 处的切线与X轴的交点作下一次X(n+1)值的方法。参考图4-2(a)。在这一方法中为了能收敛于真解,初值X(0)的选取及函数f(X)必须满足适当的条件,如图4-2(b)所示的那种情况就不能收敛或收敛到别的根上去。
这一方法还可以做下面的解释,设第n次迭代得到的解与真值之差,即 的误差为 时,则
(4-8)
把 在 附近对 用泰勒级数展开
(4-9)
上式略去 以下的项
(4-10)
的误差可近似由上式计算出来
图4-2
(4-11)
比较式(4-7)和(4-11),可以看出牛顿-拉夫逊法的修正量和 的误差的一次项相等。
用同样的方法考虑,给出对n个变量 (:Because of the importance and complexity of power system, better algorithm and programme language
is very important . An interior point method based on the perturbed Karush2Kuhn2Tucker (KKT) condition is pre2
sented in this paper , where the method and process for the optimal power flow is treated through the Matlab’s
symbolic math toolbox and Mfunction is also presented. Using the symbolic code , it can improve the adaptability
of the programme dramatically. The advantage is that , what we need to do is change the model expression. We
can make use of the symbolic programme to check our programme while we write the Mfunctions. Using the Mat2
lab , we find the optimal solutions and calculate quickly and efficiently. It has proposed the powerful and unique
functions of Matlab in the optimization and calculation for power system.
Key words :power system symbolic calculation optimal power flow interior point method)
- 2020-07-08 16:38:56下载
- 积分:1
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jade
基于四阶累积量的联合对角化,其中给出两种四阶累积量计算方法,方便理解。这个算法还是比较难的,可以参看下独立分量分析中的jade算法(Fourth-order cumulant-based joint diagonalization, which gives two fourth-order cumulant method, easy to understand. This algorithm is quite difficult, you can see under the jade independent component analysis algorithm)
- 2010-05-21 22:27:22下载
- 积分:1
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Matlab_imageMatlab
附录MATLAB 图像处理命令
1.applylut
功能:
在二进制图像中利用lookup 表进行边沿操作。
语法:
A = applylut(BW,lut)
举例
lut = makelut( sum(x(:)) == 4 ,2)
BW1 = imread( text.tif )
BW2 = applylut(BW1,lut)
imshow(BW1)
figure, imshow(BW2)
相关命令:
makelut
2.bestblk
功
举例(Appendix MATLAB image processing an order. Applylut functions : the binary image using lookup tables for 2500 operations. Grammar : A = applylut (BW, lut) For lut makelut = (sum (x (:)) == 4. 2) = imread BW1 (text.tif) BW2 = applylut (BW1. lut) imshow (BW1) figure, imshow (BW2) related orders : makelut 2. For bestblk Gong)
- 2007-03-14 10:07:26下载
- 积分:1