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xiashan
MATLAB 牛顿下山法的一个小程序，原理就不详细说了。因牛顿迭代法受初值选取的限制，为防止迭代发散，对迭代过程再附加一项要求:|f(x(k+1))|<|f(x(k))|,将牛顿法迭代的结果:x(k+1) =x(k)-f(x(k))/f (x(k))和前一近似值x(k)适当加权平均做为新的改进值:x(k+1)=u*x(k+1) +(1-u)*x(k),其中u(0<>
迭代时u取1开始，逐次减半计算，直至附加要求符合为止。实例计算中x(k)=x(0)不变，只更新u和x(k+1)，直至:|f(x(k+1))|<|f(x(k))|（即|f(x(1))|<|f(x(0))|)，然后更新下山因子为u=1,继续以牛顿法迭代。(MATLAB Newton-down a small program, the principle is not explained in detail. Newton iteration by the initial value of the selected limit, in order to prevent additional iterative divergence, the iterative process a request: | f (x (k+1)) | < | f (x (k)) | Newton iteration Results: x (k+1) ' = X (k)-f (x (k))/f' (x (k)) and a previous approximation x (k), appropriately weighted average as a new improved value: x (k+1 ) = u* x (k+1) ' + (1-u)* x (k), where u (0 < u> iteration take successive calculated at 50 until the additional requirements found so far. examples of calculation of X ( k) = x (0) unchanged profile u and x (k+1, hungry) until: | f (x (k+1)) | < | f (x (k)) | (i.e. | f (x (1)) | < | f (x (0)) |), then profile downhill factor for u = 1, to continue to Newton iteration.)
- 2013-05-15 08:52:09下载
- 积分：1
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bayes_sike
678 最大风险bayes估计 最大风险bayes估计 (678 最大风险bayes估计)
- 2010-11-10 19:25:41下载
- 积分：1
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MATLAB_for_C_Programmers
If you were a C/C++ programmer and you want to sending data to MATLAB for plotting and testing, adding MATLAB S/W modules into your application
or complete application development in MATLAB, these slides are for you.
- 2009-07-16 09:30:13下载
- 积分：1
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AnImprovedNonDataAidedSymbolTimingRecoveryForGMSKM
说明： GMSK位同步的Gardner改进算法,是IEEE上很好的一篇文章(GMSK bit synchronization Gardner improved algorithm is very good IEEE on an article)
- 2008-09-26 22:49:37下载
- 积分：1
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mosfet3D
This is MOSFET I-V 3D Graph. made by matlab.
- 2011-05-01 16:13:30下载
- 积分：1
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Home11
Matlab conding for image Processing
- 2012-08-11 17:32:04下载
- 积分：1
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security-assessment
暂态能量函数法用于可靠性安全性评估，包括了可靠性评估及暂态能量函数法的使用，很有价值的一篇文章。(Transient energy function method for the reliability of safety assessment, including reliability assessment and the use of transient energy function method, a valuable article.)
- 2011-10-23 14:14:17下载
- 积分：1
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AC-DC-Converter
AC-DC Converter notes
- 2014-11-13 16:20:49下载
- 积分：1
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PM
二阶相位调制matlab精确仿真 二阶相位调制matlab精确仿真 (二阶相位调制matlab精确仿真 )
- 2013-12-24 22:22:14下载
- 积分：1
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an_antenna_pattern_design_software_based_on_matlab
对几种天线的方向图进行仿真，有2D和3D两种显示模式，适合matlab初学者或者天线设计初学者(Several antenna pattern of the simulation, there are two kinds of 2D and 3D display mode, suitable for beginners or the antenna design for beginners matlab)
- 2010-11-18 19:49:24下载
- 积分：1
