資源簡介
求解帶時間窗的車輛路徑問題的程序
代碼片段和文件信息
function?[]=antvrptw()
clc
clear
tic%????
city_coordinate=[33042312;36391315;41772244;37121399;34881535;33261556;32381229;41961044;4312790;4386170;
?????????????????30071970;25621756;27881491;23811676;1332695;37151678;39182179;40612370;37802212;36762578;
?????????????????30291838;42632931;34291908;35072376;33942643;34393201;29353240;31403550;25452357;27782826;23702975];%??31??????????????
carge=[0904060707040204070604040402080503050505050607050404060705030];%???????
tw=[0290240260270270240220240270260240340340320380350230250250350350260270250340240260270250230];%時間窗限制
sw=[0904060707040204070604040402080503050505050607050404060705030];%服務時間
m=30;Alpha=3;Beta=2;gama=2;Rho=0.2;NC_max=30;Q=10;W=200;qq=0.1;load_w=0;s=0;%??????
C=city_coordinate;
demands=carge;
windowtime=tw;
servicetime=sw;
vehicletime=0;
n=size(C1);%n??????????????
D=zeros(nn);%D?????????????
for?i=1:n?
???for?j=1:n?
?????if?i~=j?
?????????D(ij)=((C(i1)-C(j1))^2+(C(i2)-C(j2))^2)^0.5;?
?????else?
????????D(ij)=eps;?
?????end?
????D(ji)=D(ij);?
???end?
end?
Eta=1./D;%Eta????????????????
Tau=ones(nn);%Tau???????
Tabu=zeros(mn+32);%???????????
NC=1;%??????
G_best_route=[NC_maxn+32];%???????
G_best_length=inf.*ones(NC_max1);%??????????
length_ave=zeros(NC_max1);%?????????
%%?????????DC?
while?NC<=NC_max%????????????????
????Tabu(:1)=randint(m1[11]);
%%????m?????????????????????
for?i=1:m
????visited=Tabu(i:);
????visited=visited(visited>0);
????to_visit=setdiff(1:nvisited);
????c_temp=length(to_visit);
????j=1;
???????while?j<=n
??????????if?~isempty(to_visit)
???%%??????????????????
????for?k=1:length(to_visit)
??????????x(k)=(Tau(visited(end)to_visit(k))^Alpha)*(Eta(visited(end)to_visit(k))^Beta);%*(U(visited(end)to_visit(k))^gama);
????end???
?????????ww=rand;
????if?ww ?????????Select=find(max(x));
????else
????????x=x/(sum(x));?
???????%?????????????
???????xcum=cumsum(x);?
??????Select=find(xcum>=rand);
????end
????
????if?isempty(Select)
???????Select=1;
???????load_w=load_w+demands(Select);%車輛裝載量計算
???????else
???????load_w=load_w+demands(to_visit(Select(1)));%車輛裝載量計算
???????vehicletime=vehicletime+servicetime(to_visit(Select(1)));%服務時間計算
????end
?????
????????????????????
????%%%容量和時間判斷???
????if?load_w>W
??????????Select=1;
??????????j=j-1;
??????????load_w=0;%原來的程序
??????????vehicletime=0;%服務時間歸零
??????????Tabu(ilength(visited)+1)=Select(1);
????else?if??vehicletime>windowtime(to_visit(Select(1)))&?visited(end)~=1?%%時間判斷
????????????Tabu(i1:(length(visited)+1))=[visited1];
????????????j=j+1;
?????????else
?????????Tabu(ilength(visited)+1)=to_visit(Select(1));?
????????end
????end??
????????
end
????visited=Tabu(i:);
????visited=visited(visited>0);
????to_visit=setdiff(1:nvisited);
????x=[];
????if?visited(end)~=1
??????????Tabu(i1
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????4212??2014-05-30?17:03??antvrptw.m
-----------?---------??----------?-----??----
?????????????????4212????????????????????1
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