模拟退火算法代码

下沙小僧

[p=185, null, left]T_max=input('please input the start temprature');

[p=185, null, left]T_min=input('please input the end temprature');

[p=185, null, left]iter_max=input('please input the most interp steps on the fit temp');

[p=140, null, left]*

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' U% ?" B* _! T- p[p=185, null, left]s_max=input('please input the most steady steps ont the fit temp');

[p=185, null, left]T=T_max;

[p=185, null, left]load d:\address.txt;

[p=185, null, left]order1=randperm(size(address,1))';%

[p=185, null, left][size=174px]生成初始解。

7 U( r! o" a& C[p=185, null, left]plot(address(order1,1),address(order1,2),'*r-')

[p=185, null, left]totaldis1=distance(address,order1);

[p=185, null, left]while T>=T_min

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[p=185, null, left]plot(T,totaldis1)

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4 Z6 v2 O" c, T7 c[p=185, null, left]hold on

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6 M. l6 d7 L- J8 Z2 N2 F8 d/ k[p=185, null, left]while iter_num<iter_max&s_num<s_max;

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[p=185, null, left]order2=exhgpath(order1);

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[p=185, null, left]totaldis2=distance(address,order2);

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/ @; ]+ ?! V  d6 s1 T% U[p=185, null, left]R=rand;

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[p=185, null, left]DeltaDis=totaldis2-totaldis1;

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; j7 v# {, u# S" T+ ?* b" R[p=185, null, left]if DeltaDis<0;

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[p=185, null, left]order1=order2;

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[p=185, null, left]totaldis1=totaldis2;

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[p=185, null, left]elseif (exp((totaldis1-totaldis2)/(T))>R)

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1 @* X  M- Z& W4 [% q( m  O[p=185, null, left]order1=order2;

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[p=185, null, left]totaldis1=totaldis2;

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- X, a2 q: J- S8 B/ k[p=185, null, left][size=174px]else s_num=s_num+1;

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[p=185, null, left][size=174px]end

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[p=185, null, left][size=174px]iter_num=iter_num+1;

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[p=185, null, left][size=174px]end

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! `1 v: s! z0 }  a[p=185, null, left][size=174px]T=T*0.99;

[p=185, null, left][size=174px]end

[p=185, null, left][size=174px]order1

[p=185, null, left][size=174px]totaldis1

[p=185, null, left][size=174px]figure(2)

[p=185, null, left][size=174px]plot(address(order1,1),address(order1,2),'*r-')

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yuzhenbo1995

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