select.m

使用遗传算法实现关于函数极值问题的求解

function [y]=select(x,sumfit)
% variable 'x' stands for fitness
popsize=length(x);
sum=0;
pick=rand(1);
% avgfit=x./sumfit
for m=1:popsize+1           
    if sum<pick             
        sum=sum+x(m)/sumfit;
    else
        break;
    end
end
y=m-1;