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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3 L3 R+ I. ]  ]4 }[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。

, O' \3 E; }- E9 g5 D[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]iter_num=1;

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/ m2 p, [5 \+ ]' G& L7 a. ][p=185, null, left]s_num=1;

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

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$ \8 T* d' q/ f- t1 V[p=185, null, left]hold on

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# Q" F! j; L; W2 U% h, f* M3 M[p=185, null, left]while iter_num<iter_max&s_num<s_max;

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: O6 m9 Y. t5 ^[p=185, null, left]order2=exhgpath(order1);

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) y; t/ b9 X/ V( x8 T% n8 n[p=185, null, left]totaldis2=distance(address,order2);

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2 f$ y+ W% w. s$ B5 c[p=185, null, left]R=rand;

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

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[p=185, null, left]if DeltaDis<0;

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; X3 Z, |  F) K+ s( C$ w. l. m[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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4 B& w5 {2 K5 Z' O/ H[p=185, null, left]order1=order2;

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

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  S$ H5 y$ S/ [; F9 T& \$ N+ E6 }[p=185, null, left][size=174px]else s_num=s_num+1;

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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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[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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