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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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work
matlab实现rnn神经网络,对于使用的现场臭氧发生器数据,进行数据建模仿真,用现场数据对神经网络进行训练并得到参数(use matlab finish rnn)
- 2019-02-26 12:28:49下载
- 积分:1
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mpsk
this will generate the mpsk modulated signals
- 2010-09-16 19:12:46下载
- 积分:1
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Hermite-Matlab
Hermite插值多项式拟合Matlab程序。运用Matlab软件依据理论可画出Hermite插值图像,并求出Hermite多项式,并应用到实际问题中。(Hermite interpolation polynomial fitting Matlab program。Using Matlab software can be drawn based on the theory Hermite interpolation image, and find Hermite polynomials, and applied to practical problems.)
- 2014-06-02 18:02:57下载
- 积分:1
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Book-Matlab-tranter
pack unpacked bcd nimbers
- 2011-11-29 20:03:06下载
- 积分:1
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FastICA_25
著名的FastICA 算法,最新版本,修改了以前的Bug.(famous Fast algorithm, the latest version, which amended the previous Bug.)
- 2006-07-01 14:04:26下载
- 积分:1
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RS_main
这是个RS的信道编码程序,提供给大家,希望给大家以帮助(it is a program of encode and decode of RS,wish it can help you)
- 2010-05-26 18:26:16下载
- 积分:1
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Channel-Model-Generation-
Channel Model Generation helpful(Channel Model Generation
very helpful)
- 2015-04-22 13:40:48下载
- 积分:1
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Three-level_SVPWM_APF
三电平逆变器的SVPWM控制策略研究及其在APF中的应用(Three-level SVPWM inverter control strategy and its application in the APF)
- 2010-12-01 11:26:28下载
- 积分:1
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MATLAB_image_processing_commands
MATLAB图象处理命令~!~包含了常见的matlab图象处理命令,很使用的手册~!~(MATLAB image processing commands)
- 2009-12-30 00:36:46下载
- 积分:1