unc_nn_dejong2.m

matlab最优化理论的实现

function [fval]=unc_nn_dejong2(x)
%reference:
%note that you can get the formulation of unc_n2_dejong2 or Schwefel's function from some
%aritcles,such as
%(1)Hartmut Pohlheim 'Genetic Algorithm Toolbox Test Functions'
%
%algorithm:
%below code is  edited according to 
%(1)Hartmut Pohlheim 'Genetic Algorithm Toolbox Test Functions'
%
%solution:
% where the bounds are -65.536<=x<=65.536;
% The global minimum is at x*=zeros(n,1),and f(x*)= 0;
%It is continuos, convex and unimodal.

%Copyright:
% programmers:oiltowater.
% It comply with the GPL2.0
% Copyright 2006  oiltowater 


n=size(x,1);

suma=0;

for i=1:n
    

    suma=suma+ (sum(x(1:i,1))).^2;

    
end



fval=suma;