%%?generitic?algrithm
%%?floating?encoding
%%?f（x）=x1^2+x2^2
%%?min?f（x）
clear;
clc;
rand（‘state‘sum（100*clock））
NP=30;
pm=0.05;
pc=0.8;
alaf=0.5;
dimentions=2;
b=0.5;
UB=30;
LB=-30;
Maxiterations=50;
child=rand（NPdimentions）*（UB-LB）+LB;??%%?initialize?
farther=child;
iterations=0;
bestfx=[];
while?iterations%%?computer?the?fitness
for?p=1:NP
????x1=farther（p1）;
????x2=farther（p2）;
????fx（p）=x1^2+x2^2;
????fitness（p）=1/（fx（p）+0.0000001）;????
end
[XI]=sort（fitness）;
bestnumber=I（NP）;
bestfx（iterations+1）=min（fx）;

%%?computer?the?fitness?accumulation
for?p=1:NP
????if?p==1
????????fitacc（p）=fitness（p）;
????else
????????fitacc（p）=fitacc（p-1）+fitness（p）;
????end
end
%%?copy?operation
for?p=1:NP
????if?p==bestnumber
????????child（p:）=farther（p:）;
????else
????????randfit=rand*fitacc（NP）;
????
????????for?i=1:NP
????????????if?fitacc（i）>=randfit
????????????????break;
????????????end????????????
????????end
????????child（p:）=farther（i:）;
????end
end

%%?crossover?operation
for?number1=1:NP
????if?number1==bestnumber
????????child（number1:）=child（number1:）;
????else
????????number2=number1;
????????
????????while?number2==number1
????????????number2=rand*NP;
????????????number2=number2-rem（number21）+1;
????????end
????
????????if?pc>rand
????????????child（number1:）=alaf*child（number1:）+（1-alaf）*child（number2:）;
????????else
????????????child（number1:）=child（number1:）;
????????end
????end
end

%%?mutate?operation
for?p=1:NP
????if?p==bestnumber
????????child（p:）=child（p:）;
????else
????????if?pm>rand
????????????deta=rand;
????????????power=（1-iterations/Maxiterations）^b;
????????????d=rand*dimentions;
????????????d=d-rem（d1）+1;
????????????if?（rand-0.5）>0
????????????????child（pd）=child（pd）+（UB-child（pd））*（1-deta^power）;????????????????
????????????else
????????????????child（pd）=child（pd）-（child（pd）-LB）*（1-deta^power）;
????????????end
????????else
????????????child（p:）=child（p:）;
????????end
????end
end
farther=child;
iterations=iterations+1;
end
hold?on
plot（bestfx）;
for?i=1:Maxiterations
????if?bestfx（i）<0.001
????????plot（ibestfx（i）‘r*‘）;
????????break;
????end
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????220100??2010-03-20?22:37??基于遺傳算法的攝像機自標定方法.caj

?????文件???????2249??2008-08-24?16:32??GA.m

-----------?---------??----------?-----??----

???????????????222349????????????????????2