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发表于 2005-9-21 01:19:06
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<>sets:<BR> user/1..1000/:y;<BR> tps/tp,ts/;<BR> dvd/1..100 /:t;<BR> link(user,dvd):s,e,x;<BR>endsets<BR>data:<BR> <a href="mailts=@ole('C:\LINGO\SAMPLES\satisfy.xls'" target="_blank" >s=@ole('C:\LINGO\SAMPLES\satisfy.xls'</A>);<BR> <a href="mailte=@ole('C:\LINGO\SAMPLES\prefer1.xls'" target="_blank" >e=@ole('C:\LINGO\SAMPLES\prefer1.xls'</A>);<BR> <a href="mailtt=@ole('C:\LINGO\SAMPLES\sum.xls'" target="_blank" >t=@ole('C:\LINGO\SAMPLES\sum.xls'</A>);<BR>enddata<BR>@for(linkbin(x));<BR>@for(userbin(y));<BR><a href="mailtmax=@sum(link(i,j):s(i,j)*x(i,j" target="_blank" >max=@sum(link(i,j):s(i,j)*x(i,j</A>));<BR> @for(user(i)sum(dvd(j):x(i,j))-3*y(i)=0);<BR> @for(dvd(j):@sum(user(i):x(i,j))<=t);<BR> @for(link:x<=e);<BR><a href="mailttp=@sum(link(i,j):e(i,j)*x(i,j" target="_blank" >tp=@sum(link(i,j):e(i,j)*x(i,j</A>));<BR>@sum(user(i):y(i))=997;</P>
<>这是我们第二题的程序,s是非零偏好的倒数,修改参数的Lingo8.0可在24秒解出。</P> |
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