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graymodel
GM(1,1)灰色预测的matlab的.m文件,可以直接使用。(GM (1,1) in matlab forecasts gray. M files can be used directly.)
- 2009-05-16 15:46:44下载
- 积分:1
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Orchard.Publications.Signals.and.Systems.with
This text contains a comprehensive discussion on continuous and discrete time signals and systems
with many MATLAB® examples. It is written for junior and senior electrical engineering students,
and for self-study by working professionals.
- 2011-02-01 10:06:14下载
- 积分:1
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xiaobo
基于小波变换的图像压缩的MATLAB实现(Based on wavelet transform image compression to achieve the MATLAB)
- 2009-05-25 13:10:06下载
- 积分:1
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CMA_ES
一种协方差矩阵自适应优化算法的说明文档和MATLAB实现。测试函数经测试可以运行。(A covariance matrix adaptive optimization algorithm for documentation and MATLAB implementation. The test function can be run by testing.)
- 2020-12-14 22:39:14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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my_dssss
this file simulate Direct Sequence Spread Spectrum Transmitter/Receiver systems With Time-Synchronization
- 2014-12-05 23:06:03下载
- 积分:1
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sinX
sinX函数,一个输入对应一个输出,最后在matlab上显示sin函数图形(SinX function, an input corresponding to an output, the sine function is displayed in the matlab graphics
)
- 2013-04-10 19:33:00下载
- 积分:1
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2dpecgaussian
2d fdtd pec with gaussian source
- 2011-01-01 03:24:18下载
- 积分:1
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rfvuessi
包括最小二乘法、SVM、神经网络、1_k近邻法,BP神经网络用于函数拟合与模式识别,在MATLAB中求图像纹理特征,代码里有很完整的注释和解释,通过反复训练模板能有较高的识别率。(Including the least squares method, the SVM, neural networks, 1 _k neighbor method, BP neural network function fitting and pattern recognition, In the MATLAB image texture feature, Code, there are very complete notes and explanations Through repeated training jLKGpfTlate have higher recognition rate.)
- 2016-03-16 19:45:07下载
- 积分:1
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generalhammenstainmodel
广义hammenstain模型,用于功率放大器建模,效果很好(Hammenstain generalized model for power amplifier modeling, the effect of good)
- 2007-12-02 09:57:09下载
- 积分:1