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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[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。

[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

[p=185, null, left]iter_num=1;

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[p=185, null, left]s_num=1;

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

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[p=185, null, left]hold on

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[p=185, null, left]while iter_num<iter_max&s_num<s_max;

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0 o2 [7 B! H! @& s- m% M. n5 z[p=185, null, left]order2=exhgpath(order1);

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

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+ Q( K" O- z# Y" b( K! e[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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! |! v5 y3 G+ D6 ]( Y' T* Q[p=185, null, left]order1=order2;

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

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# l" z9 ~/ b% J: v[p=185, null, left]elseif (exp((totaldis1-totaldis2)/(T))>R)

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

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6 C: y/ h/ P) N: O# Z. R' O[p=185, null, left]totaldis1=totaldis2;

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2 v1 B' ^7 `, H[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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- q# M+ l- W1 Q- ~' A- L[p=185, null, left][size=174px]iter_num=iter_num+1;

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6 V4 U) ^# L# ]9 S[p=185, null, left][size=174px]end

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0 |& G7 c/ U" L' y[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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