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pca_2d
MATLAB自已编的二维DLA,基于ORL人脸数据库,效果不错。(MATLAB own series of two-dimensional DLA, based on the ORL face database, good results.)
- 2008-06-19 09:41:08下载
- 积分:1
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mathematical-modeling
说明: 有关数学建模的源码和教程,对于初学者很有用(The mathematical source code and tutorials, useful for beginners)
- 2011-02-27 10:20:17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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tensor
matlab的张量工具箱,方便使用,添加到库中就可以,可以方便实现关于张量等多维信息的计算(helpful for your tensor calculation)
- 2014-12-01 22:15:13下载
- 积分:1
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RLS
自适应滤波,利用RLS自适应滤波算法实现信道的均衡,通过Matlab进行编程和仿真(Adaptive filter,use the RLS adaptive filtering algorithm to complete the channel equalization, programming and simulation by Matlab)
- 2011-06-09 15:39:58下载
- 积分:1
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KimDB
Matlab code for following paper>
A Deblocking Filter with Two Separate
Modes in Block-Based Video Coding
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 9, NO. 1, FEBRUARY 1999
- 2012-08-02 21:21:30下载
- 积分:1
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jaibharath
Matlab voice vehicle code can connected with external device
- 2013-08-19 12:46:07下载
- 积分:1
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matlabjiankongjianche
基于交通车辆识别的边缘检测,可以得到车辆的边界从而获得车的数量(Edge detection based on the identification of the transport vehicles can be obtained by the quantity of the boundary of the vehicle thereby obtaining Cart)
- 2013-05-19 11:38:58下载
- 积分:1
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MatLab2
说明: 由于matlab提供了一些很有用的计算方法
但是大部分用户只用到其中一部分的功能
所以写了一个包括解方程,矩阵计算,排序功能的代码(As matlab provides some very useful method but most users only use part of the function it was a including solving equations, matrices, and sorting code)
- 2010-05-03 10:22:44下载
- 积分:1
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jjmbianma
这是一个卷积码的编码的源程序,适用于实现卷积码编码的MATLAB仿真。(This is a convolution code coding the source program, suitable to achieve convolution code coding of MATLAB simulation.)
- 2012-05-15 17:09:39下载
- 积分:1