资源简介
微分进化算法,附带简单的例子,可以站内交流,
代码片段和文件信息
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Function: [FVr_bestmemS_bestvalI_nfeval] = deopt(fnameS_struct)
%
% Author: Rainer Storn Ken Price Arnold Neumaier Jim Van Zandt
% Description: Minimization of a user-supplied function with respect to x(1:I_D)
% using the differential evolution (DE) algorithm.
% DE works best if [FVr_minboundFVr_maxbound] covers the region where the
% global minimum is expected. DE is also somewhat sensitive to
% the choice of the stepsize F_weight. A good initial guess is to
% choose F_weight from interval [0.5 1] e.g. 0.8. F_CR the crossover
% probability constant from interval [0 1] helps to maintain
% the diversity of the population but should be close to 1 for most.
% practical cases. Only separable problems do better with CR close to 0.
% If the parameters are correlated high values of F_CR work better.
% The reverse is true for no correlation.
%
% The number of population members I_NP is also not very critical(决定性的). A
% good initial guess is 10*I_D. Depending on the difficulty of the
% problem I_NP can be lower than 10*I_D or must be higher than 10*I_D
% to achieve convergence.
%
% deopt is a vectorized variant of DE which however has a
% property which differs from the original version of DE:
% The random selection of vectors is performed by shuffling(滑移) the
% population array. Hence a certain vector can‘t be chosen twice
% in the same term of the perturbation expression.
% Due to the vectorized expressions deopt executes fairly fast
% in MATLAB‘s interpreter environment.
%
% Parameters: fname (I) String naming a function f(xy) to minimize.
% S_struct (I) Problem data vector (must remain fixed during the
% minimization). For details see Rundeopt.m.
% ---------members of S_struct----------------------------------------------------
% F_VTR (I) “Value To Reach“. deopt will stop its minimization
% if either the maximum number of iterations “I_itermax“
% is reached or the best parameter vector “FVr_bestmem“
% has found a value f(FVr_bestmemy) <= F_VTR.
% FVr_minbound (I) Vector of lower bounds FVr_minbound(1) ... FVr_minbound(I_D)
% of initial population.
% *** note: these are not bound con
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 15800 2010-04-12 21:34 DE\deopt.m
文件 1839 2010-04-13 19:52 DE\left_win.m
文件 2260 2010-04-12 21:36 DE\objfun.m
文件 1453 2002-01-24 23:05 DE\PlotIt.m
文件 5100 2010-04-12 17:17 DE\Rundeopt.m
文件 512 2002-01-24 22:51 DE\step.m
目录 0 2010-05-15 12:14 DE
----------- --------- ---------- ----- ----
26964 7
相关资源
- 天线阵的波束形成在MATLAB仿真程序及
- 非线性SVM算法-matlab实现
- 《MATLAB 智能算法超级学习手册》-程序
- 组合导航matlab程序
- 读取txt文件内容matlab代码实现
- Matlab实现基于相关的模板匹配程序
- matlab优化工具箱讲解
- 基于MATLAB的快速傅里叶变换
- 光纤传输中的分布傅立叶算法matlab实
- 基于matlab的图像处理源程序
- matlab 椭圆拟合程序
- 算术编码解码matlab源代码
- optical_flow 光流法 matlab 实现程序
- 引导图像滤波器 Matlab实现
- 分形几何中一些经典图形的Matlab画法
- OFDM系统MATLAB仿真代码
- SVM工具箱(matlab中运行)
- 图像小波变换MatLab源代码
- LU分解的MATLAB实现
- 冈萨雷斯数字图像处理matlab版(第三
- 替代数据法的matlab程序
- 用matlab实现的多站定位系统性能仿真
- 通过不同方法进行粗糙集属性约简m
- k近邻算法matlab实现
- matlab识别系统
- 神经网络分类matlab程序
- matlab正弦信号发生器的设计
- matlab程序用Hopfield网络解决TSP
- 实例matlab 编程100个常用程序
- 用MATLAB(BPSK仿真 直接扩频)
评论
共有 条评论