在同学的帮助下,程序改进了不少,但约束部分还是不懂,程序还是运行不出来~~~只有继续请教高手啦! MODEL: sets: ship/1..11/:s,a,d,l,m; berth/1..4/:r; time:; link(ship,berth):c; contact(ship,berth,time):x; endsets data: m=428 45 259 172 684 356 435 350 150 250 333; a=9 9 0.5 21 0.5 8.5 7 11.5 21.5 22 9; l=20 21 13 23.83 23.83 21 20.5 23.83 23.83 23.83 23.83; r=90 60 30 30; enddata !Objective function; [OBJ]min=@sum(contact(i,j,k):c(i,j)*x(i,j,k))+@sum(contact(i,j,k)s(i)-a(i))*x(i,j,k)+@sum(contact(i,j,k)s(i)+c(i,j)-d(i))*x(i,j,k)); @for(link(i,j):c(i,j)*r(j)=m(i)); @sum(link(i,j):x(i,j,k))=1; @for(ship(i)sum(ship(i):x(i,j,k)); @for(link(i,j,k):s(i)*x(i,k-1)+c(i,j)*x(i,j,k-1)<s(k)*x(i,j,k); @for(k<11,k>0); end 数学模型:Min z=∑∑∑cijxijk +∑∑∑(si-ai)xijk+∑∑∑(si+cij-di)xijk, 约束:∑j∑k(xijk)=1 ∑ixijk<=1, (si+cij)xij,k-1<=skxijk,
[此贴子已经被作者于2008-5-26 23:39:14编辑过] |